./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/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_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:53:29,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:53:29,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 18:53:29,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:53:29,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:53:29,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:53:29,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:53:29,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:53:29,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:53:29,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:53:29,605 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:53:29,605 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:53:29,606 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:53:29,606 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:53:29,607 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:53:29,607 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:53:29,608 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:53:29,609 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:53:29,609 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:53:29,610 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:53:29,610 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:53:29,611 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:53:29,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:53:29,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:53:29,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:53:29,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:53:29,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:53:29,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:53:29,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:53:29,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:53:29,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:53:29,616 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 18:53:29,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:53:29,616 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:53:29,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:53:29,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:53:29,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:53:29,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:53:29,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:53:29,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:29,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:53:29,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:53:29,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:53:29,619 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:53:29,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:53:29,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:53:29,619 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:53:29,620 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:53:29,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:53:29,620 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_71cce353-c47d-4afc-9f5a-64ac3300031b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2023-12-02 18:53:29,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:53:29,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:53:29,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:53:29,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:53:29,869 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:53:29,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2023-12-02 18:53:32,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:53:32,872 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:53:32,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2023-12-02 18:53:32,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/data/555128ea7/c991231317e84083b65ac300d5144751/FLAGb3c56fee0 [2023-12-02 18:53:32,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/data/555128ea7/c991231317e84083b65ac300d5144751 [2023-12-02 18:53:32,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:53:32,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:53:32,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:32,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:53:32,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:53:32,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:32" (1/1) ... [2023-12-02 18:53:32,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8928c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:32, skipping insertion in model container [2023-12-02 18:53:32,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:32" (1/1) ... [2023-12-02 18:53:32,931 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:53:33,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:33,102 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:53:33,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:33,138 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:53:33,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33 WrapperNode [2023-12-02 18:53:33,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:33,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:33,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:53:33,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:53:33,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,174 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-12-02 18:53:33,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:33,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:53:33,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:53:33,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:53:33,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:53:33,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:53:33,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:53:33,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:53:33,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:33,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:33,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:53:33,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:53:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:53:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:53:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:53:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:53:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2023-12-02 18:53:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2023-12-02 18:53:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:53:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:53:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:53:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:53:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:53:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:53:33,354 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:53:33,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:53:33,741 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:53:33,773 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:53:33,773 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:53:33,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:33 BoogieIcfgContainer [2023-12-02 18:53:33,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:53:33,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:53:33,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:53:33,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:53:33,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:53:32" (1/3) ... [2023-12-02 18:53:33,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43379495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:33, skipping insertion in model container [2023-12-02 18:53:33,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33" (2/3) ... [2023-12-02 18:53:33,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43379495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:33, skipping insertion in model container [2023-12-02 18:53:33,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:33" (3/3) ... [2023-12-02 18:53:33,785 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2023-12-02 18:53:33,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:53:33,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-12-02 18:53:33,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:53:33,854 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;@2077065d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:53:33,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-12-02 18:53:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 114 states have internal predecessors, (115), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:53:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:53:33,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:33,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:53:33,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:33,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:33,869 INFO L85 PathProgramCache]: Analyzing trace with hash 182797673, now seen corresponding path program 1 times [2023-12-02 18:53:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:33,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430058622] [2023-12-02 18:53:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:34,530 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 18:53:34,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:34,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430058622] [2023-12-02 18:53:34,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430058622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:34,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:34,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:53:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151911972] [2023-12-02 18:53:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:34,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:53:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:53:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:53:34,565 INFO L87 Difference]: Start difference. First operand has 124 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 114 states have internal predecessors, (115), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:34,837 INFO L93 Difference]: Finished difference Result 239 states and 253 transitions. [2023-12-02 18:53:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:53:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 18:53:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:34,850 INFO L225 Difference]: With dead ends: 239 [2023-12-02 18:53:34,850 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 18:53:34,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:53:34,857 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 105 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:34,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 524 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:53:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 18:53:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 154. [2023-12-02 18:53:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 91 states have (on average 1.7582417582417582) internal successors, (160), 141 states have internal predecessors, (160), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-02 18:53:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2023-12-02 18:53:34,916 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 5 [2023-12-02 18:53:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:34,916 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2023-12-02 18:53:34,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2023-12-02 18:53:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 18:53:34,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:34,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:53:34,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:34,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -92951107, now seen corresponding path program 1 times [2023-12-02 18:53:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484461194] [2023-12-02 18:53:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:35,039 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 18:53:35,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:35,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484461194] [2023-12-02 18:53:35,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484461194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:35,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:35,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042639733] [2023-12-02 18:53:35,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:53:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:53:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:53:35,044 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:35,182 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2023-12-02 18:53:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:53:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-02 18:53:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:35,185 INFO L225 Difference]: With dead ends: 156 [2023-12-02 18:53:35,185 INFO L226 Difference]: Without dead ends: 154 [2023-12-02 18:53:35,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:35,187 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 62 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:35,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 333 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:53:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-02 18:53:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-12-02 18:53:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 140 states have internal predecessors, (158), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-02 18:53:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2023-12-02 18:53:35,206 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 13 [2023-12-02 18:53:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:35,207 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2023-12-02 18:53:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2023-12-02 18:53:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 18:53:35,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:35,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:35,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:53:35,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:35,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1413483026, now seen corresponding path program 1 times [2023-12-02 18:53:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510215236] [2023-12-02 18:53:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:35,304 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 18:53:35,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:35,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510215236] [2023-12-02 18:53:35,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510215236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:35,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:35,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:35,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633272567] [2023-12-02 18:53:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:53:35,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:53:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:53:35,307 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:35,449 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2023-12-02 18:53:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:53:35,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 18:53:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:35,452 INFO L225 Difference]: With dead ends: 154 [2023-12-02 18:53:35,452 INFO L226 Difference]: Without dead ends: 152 [2023-12-02 18:53:35,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:35,454 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 53 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:35,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 364 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:53:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-02 18:53:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-02 18:53:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.684782608695652) internal successors, (155), 138 states have internal predecessors, (155), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-02 18:53:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 177 transitions. [2023-12-02 18:53:35,470 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 177 transitions. Word has length 14 [2023-12-02 18:53:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:35,471 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 177 transitions. [2023-12-02 18:53:35,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 177 transitions. [2023-12-02 18:53:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 18:53:35,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:35,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:35,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:53:35,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:35,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 868300895, now seen corresponding path program 1 times [2023-12-02 18:53:35,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:35,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401320492] [2023-12-02 18:53:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:35,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:35,562 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 18:53:35,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:35,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401320492] [2023-12-02 18:53:35,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401320492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:35,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:35,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111580646] [2023-12-02 18:53:35,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:35,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:53:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:53:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:53:35,565 INFO L87 Difference]: Start difference. First operand 152 states and 177 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:35,687 INFO L93 Difference]: Finished difference Result 152 states and 177 transitions. [2023-12-02 18:53:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:53:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 18:53:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:35,689 INFO L225 Difference]: With dead ends: 152 [2023-12-02 18:53:35,689 INFO L226 Difference]: Without dead ends: 151 [2023-12-02 18:53:35,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:35,691 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 51 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:35,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 328 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:53:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-02 18:53:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-12-02 18:53:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 92 states have (on average 1.6630434782608696) internal successors, (153), 137 states have internal predecessors, (153), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-02 18:53:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2023-12-02 18:53:35,705 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 15 [2023-12-02 18:53:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:35,705 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2023-12-02 18:53:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2023-12-02 18:53:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:53:35,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:35,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:35,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:53:35,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:35,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1147524020, now seen corresponding path program 1 times [2023-12-02 18:53:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:35,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781540804] [2023-12-02 18:53:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:35,791 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 18:53:35,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:35,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781540804] [2023-12-02 18:53:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781540804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:35,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:35,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623087515] [2023-12-02 18:53:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:35,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:53:35,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:53:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:53:35,794 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:35,937 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2023-12-02 18:53:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:53:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 18:53:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:35,940 INFO L225 Difference]: With dead ends: 151 [2023-12-02 18:53:35,940 INFO L226 Difference]: Without dead ends: 150 [2023-12-02 18:53:35,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:35,942 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 46 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:35,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 328 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:53:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-02 18:53:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-02 18:53:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 92 states have (on average 1.641304347826087) internal successors, (151), 136 states have internal predecessors, (151), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-02 18:53:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 173 transitions. [2023-12-02 18:53:35,954 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 173 transitions. Word has length 16 [2023-12-02 18:53:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:35,955 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 173 transitions. [2023-12-02 18:53:35,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 173 transitions. [2023-12-02 18:53:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 18:53:35,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:35,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:35,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:53:35,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:35,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1213506305, now seen corresponding path program 1 times [2023-12-02 18:53:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921837982] [2023-12-02 18:53:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:35,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:35,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151713792] [2023-12-02 18:53:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:35,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:35,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:35,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:53:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:36,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 18:53:36,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:36,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 43 [2023-12-02 18:53:36,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-12-02 18:53:36,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:36,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,281 INFO L349 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2023-12-02 18:53:36,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 144 [2023-12-02 18:53:36,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:36,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 42 [2023-12-02 18:53:36,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:36,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-12-02 18:53:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 54 [2023-12-02 18:53:36,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 29 [2023-12-02 18:53:36,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 18:53:36,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-12-02 18:53:36,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:36,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 61 [2023-12-02 18:53:36,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 36 [2023-12-02 18:53:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 18:53:36,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:53:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:36,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,856 INFO L349 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2023-12-02 18:53:36,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 148 [2023-12-02 18:53:36,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:36,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 18:53:37,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,043 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-12-02 18:53:37,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 73 [2023-12-02 18:53:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,073 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-12-02 18:53:37,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 46 [2023-12-02 18:53:37,090 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:37,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2023-12-02 18:53:37,119 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2023-12-02 18:53:37,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 27 treesize of output 30 [2023-12-02 18:53:37,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:53:37,134 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 15 treesize of output 19 [2023-12-02 18:53:37,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-02 18:53:37,184 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:37,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 1 [2023-12-02 18:53:37,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2023-12-02 18:53:37,233 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:37,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-12-02 18:53:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 1 [2023-12-02 18:53:37,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 43 [2023-12-02 18:53:37,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:37,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-12-02 18:53:37,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:37,339 INFO L349 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2023-12-02 18:53:37,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 1 [2023-12-02 18:53:37,990 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 18:53:37,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:37,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921837982] [2023-12-02 18:53:37,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151713792] [2023-12-02 18:53:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151713792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:37,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:37,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 18:53:37,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834906025] [2023-12-02 18:53:37,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:37,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:53:37,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:53:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:53:37,994 INFO L87 Difference]: Start difference. First operand 150 states and 173 transitions. Second operand has 11 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:40,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:53:42,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:53:44,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:53:46,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:53:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:46,968 INFO L93 Difference]: Finished difference Result 223 states and 232 transitions. [2023-12-02 18:53:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:53:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-02 18:53:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:46,970 INFO L225 Difference]: With dead ends: 223 [2023-12-02 18:53:46,970 INFO L226 Difference]: Without dead ends: 222 [2023-12-02 18:53:46,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-02 18:53:46,972 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 265 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:46,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 647 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 293 Invalid, 4 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 18:53:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-02 18:53:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 166. [2023-12-02 18:53:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.6476190476190475) internal successors, (173), 149 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:53:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2023-12-02 18:53:46,986 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 17 [2023-12-02 18:53:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:46,986 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2023-12-02 18:53:46,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2023-12-02 18:53:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 18:53:46,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:46,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:46,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:53:47,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:47,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:47,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1036010154, now seen corresponding path program 1 times [2023-12-02 18:53:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:47,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872400180] [2023-12-02 18:53:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:47,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:47,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611186457] [2023-12-02 18:53:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:47,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:47,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:53:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:47,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 18:53:47,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2023-12-02 18:53:47,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:47,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-12-02 18:53:47,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-12-02 18:53:47,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:47,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2023-12-02 18:53:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-12-02 18:53:47,405 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 0 case distinctions, treesize of input 41 treesize of output 17 [2023-12-02 18:53:47,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:47,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-12-02 18:53:47,424 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:47,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2023-12-02 18:53:47,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:47,452 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:47,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2023-12-02 18:53:47,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:47,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:47,482 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:47,483 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2023-12-02 18:53:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-02 18:53:47,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-12-02 18:53:47,511 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:47,511 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 18:53:47,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:47,518 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 16 treesize of output 11 [2023-12-02 18:53:47,694 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 18:53:47,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:47,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:47,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872400180] [2023-12-02 18:53:47,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:47,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611186457] [2023-12-02 18:53:47,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611186457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:47,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:47,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:47,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965267063] [2023-12-02 18:53:47,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:47,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:53:47,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:53:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:47,696 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:48,053 INFO L93 Difference]: Finished difference Result 218 states and 227 transitions. [2023-12-02 18:53:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:53:48,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-12-02 18:53:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:48,056 INFO L225 Difference]: With dead ends: 218 [2023-12-02 18:53:48,056 INFO L226 Difference]: Without dead ends: 217 [2023-12-02 18:53:48,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:53:48,057 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 129 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:48,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 549 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:53:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-02 18:53:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 166. [2023-12-02 18:53:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.638095238095238) internal successors, (172), 149 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:53:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2023-12-02 18:53:48,071 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 18 [2023-12-02 18:53:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2023-12-02 18:53:48,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:53:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2023-12-02 18:53:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 18:53:48,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:48,072 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:48,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 18:53:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:48,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:48,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash -303428247, now seen corresponding path program 1 times [2023-12-02 18:53:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:48,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043238591] [2023-12-02 18:53:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:48,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:48,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273939297] [2023-12-02 18:53:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:48,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:48,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:53:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:48,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 18:53:48,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:48,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:48,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2023-12-02 18:53:48,431 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-12-02 18:53:48,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2023-12-02 18:53:48,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:48,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 61 [2023-12-02 18:53:48,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:48,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:48,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2023-12-02 18:53:48,569 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-12-02 18:53:48,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2023-12-02 18:53:48,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 63 [2023-12-02 18:53:48,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 132 [2023-12-02 18:53:48,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-12-02 18:53:48,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2023-12-02 18:53:48,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 53 [2023-12-02 18:53:48,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 86 [2023-12-02 18:53:48,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 1 [2023-12-02 18:53:48,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 61 [2023-12-02 18:53:48,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:48,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-12-02 18:53:48,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:48,808 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 29 [2023-12-02 18:53:48,838 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:48,869 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:48,901 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:48,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-12-02 18:53:48,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:48,970 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:48,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 29 [2023-12-02 18:53:49,029 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:49,067 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:49,104 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:49,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2023-12-02 18:53:49,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 18:53:49,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-02 18:53:49,201 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 29 [2023-12-02 18:53:49,237 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:49,276 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:49,316 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:49,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:49,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:49,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2023-12-02 18:53:49,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:49,346 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,350 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,367 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,374 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,381 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,388 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2023-12-02 18:53:49,401 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-12-02 18:53:49,415 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 8 [2023-12-02 18:53:49,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:49,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,446 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,455 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,464 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,473 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2023-12-02 18:53:49,488 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-12-02 18:53:49,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:49,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2023-12-02 18:53:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,527 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:49,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:53:49,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2023-12-02 18:53:49,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,540 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:49,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:53:49,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2023-12-02 18:53:49,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 48 [2023-12-02 18:53:49,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 70 [2023-12-02 18:53:49,579 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 53 [2023-12-02 18:53:49,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 86 [2023-12-02 18:53:49,607 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,626 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:49,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,636 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,645 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,655 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:49,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:49,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:49,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2023-12-02 18:53:49,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:49,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:49,677 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,682 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:53:49,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:49,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043238591] [2023-12-02 18:53:49,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273939297] [2023-12-02 18:53:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273939297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:49,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163026938] [2023-12-02 18:53:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:49,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:53:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:53:49,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:49,904 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:50,155 INFO L93 Difference]: Finished difference Result 217 states and 226 transitions. [2023-12-02 18:53:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:53:50,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-12-02 18:53:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:50,157 INFO L225 Difference]: With dead ends: 217 [2023-12-02 18:53:50,157 INFO L226 Difference]: Without dead ends: 216 [2023-12-02 18:53:50,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:53:50,158 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 144 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:50,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 474 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:53:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-02 18:53:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 166. [2023-12-02 18:53:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.6285714285714286) internal successors, (171), 149 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:53:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2023-12-02 18:53:50,171 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 23 [2023-12-02 18:53:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:50,171 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2023-12-02 18:53:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2023-12-02 18:53:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:53:50,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:50,172 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:50,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:53:50,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 18:53:50,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:50,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash -816341004, now seen corresponding path program 1 times [2023-12-02 18:53:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706467205] [2023-12-02 18:53:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:50,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:50,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:50,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898987607] [2023-12-02 18:53:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:50,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:50,388 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:50,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:53:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:50,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 18:53:50,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:50,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2023-12-02 18:53:50,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 63 [2023-12-02 18:53:50,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 66 [2023-12-02 18:53:50,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 135 [2023-12-02 18:53:50,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-12-02 18:53:50,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2023-12-02 18:53:50,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2023-12-02 18:53:50,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:50,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2023-12-02 18:53:50,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:50,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:50,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:50,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:50,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:50,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 61 [2023-12-02 18:53:50,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:50,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:50,750 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-12-02 18:53:50,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-12-02 18:53:50,785 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-12-02 18:53:50,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 19 [2023-12-02 18:53:50,820 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-12-02 18:53:50,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 19 [2023-12-02 18:53:50,874 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:50,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:50,915 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:50,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 29 [2023-12-02 18:53:50,951 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:50,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:50,986 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 18:53:50,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2023-12-02 18:53:50,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 8 [2023-12-02 18:53:51,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:51,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-12-02 18:53:51,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2023-12-02 18:53:51,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2023-12-02 18:53:51,030 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2023-12-02 18:53:51,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 20 [2023-12-02 18:53:51,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,048 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:51,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:53:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,058 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,076 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:51,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,085 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,094 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,134 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,152 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:51,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,162 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,170 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-12-02 18:53:51,185 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2023-12-02 18:53:51,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2023-12-02 18:53:51,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 26 [2023-12-02 18:53:51,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:53:51,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,226 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:51,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 18:53:51,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2023-12-02 18:53:51,236 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,245 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,263 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,272 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,281 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 61 [2023-12-02 18:53:51,305 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-12-02 18:53:51,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2023-12-02 18:53:51,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2023-12-02 18:53:51,327 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:51,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2023-12-02 18:53:51,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,348 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:51,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:53:51,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2023-12-02 18:53:51,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,366 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:51,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 18:53:51,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2023-12-02 18:53:51,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 48 [2023-12-02 18:53:51,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-02 18:53:51,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:51,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 53 [2023-12-02 18:53:51,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 26 [2023-12-02 18:53:51,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:51,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,431 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,450 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:51,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,459 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,469 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2023-12-02 18:53:51,480 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,491 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,495 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2023-12-02 18:53:51,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2023-12-02 18:53:51,516 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2023-12-02 18:53:51,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2023-12-02 18:53:51,539 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:53:51,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,555 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,575 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-12-02 18:53:51,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,584 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:51,593 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 18:53:51,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 18:53:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:53:51,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:51,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706467205] [2023-12-02 18:53:51,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898987607] [2023-12-02 18:53:51,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898987607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:51,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:51,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:51,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895035038] [2023-12-02 18:53:51,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:51,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:53:51,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:51,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:53:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:51,825 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:52,011 INFO L93 Difference]: Finished difference Result 216 states and 225 transitions. [2023-12-02 18:53:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:53:52,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-12-02 18:53:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:52,013 INFO L225 Difference]: With dead ends: 216 [2023-12-02 18:53:52,013 INFO L226 Difference]: Without dead ends: 215 [2023-12-02 18:53:52,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:53:52,014 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 219 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:52,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 369 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:53:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-02 18:53:52,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 166. [2023-12-02 18:53:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.619047619047619) internal successors, (170), 149 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:53:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2023-12-02 18:53:52,027 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 24 [2023-12-02 18:53:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:52,027 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2023-12-02 18:53:52,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2023-12-02 18:53:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 18:53:52,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:52,029 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:52,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:53:52,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 18:53:52,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:52,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:52,245 INFO L85 PathProgramCache]: Analyzing trace with hash 463232715, now seen corresponding path program 1 times [2023-12-02 18:53:52,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:52,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91885297] [2023-12-02 18:53:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:52,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:52,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:52,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773084029] [2023-12-02 18:53:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:52,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:52,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:52,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:52,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:53:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:52,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 18:53:52,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:52,377 INFO L349 Elim1Store]: treesize reduction 28, result has 26.3 percent of original size [2023-12-02 18:53:52,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2023-12-02 18:53:52,406 INFO L349 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2023-12-02 18:53:52,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 70 [2023-12-02 18:53:52,427 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-12-02 18:53:52,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 30 [2023-12-02 18:53:52,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 18:53:52,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:52,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-12-02 18:53:52,480 INFO L349 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2023-12-02 18:53:52,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 48 [2023-12-02 18:53:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 15 [2023-12-02 18:53:52,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:52,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:52,513 INFO L349 Elim1Store]: treesize reduction 37, result has 2.6 percent of original size [2023-12-02 18:53:52,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 1 [2023-12-02 18:53:52,533 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,559 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 1 [2023-12-02 18:53:52,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,582 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,593 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,594 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,617 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,630 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,630 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,663 INFO L349 Elim1Store]: treesize reduction 61, result has 1.6 percent of original size [2023-12-02 18:53:52,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2023-12-02 18:53:52,675 INFO L349 Elim1Store]: treesize reduction 37, result has 2.6 percent of original size [2023-12-02 18:53:52,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 1 [2023-12-02 18:53:52,686 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-12-02 18:53:52,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 1 [2023-12-02 18:53:52,707 INFO L349 Elim1Store]: treesize reduction 85, result has 1.2 percent of original size [2023-12-02 18:53:52,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 1 [2023-12-02 18:53:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,728 INFO L349 Elim1Store]: treesize reduction 110, result has 0.9 percent of original size [2023-12-02 18:53:52,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 1 [2023-12-02 18:53:52,746 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,775 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 1 [2023-12-02 18:53:52,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,796 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,810 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,810 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,833 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,845 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:53:52,845 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 18:53:52,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:52,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:53:52,877 INFO L349 Elim1Store]: treesize reduction 61, result has 1.6 percent of original size [2023-12-02 18:53:52,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2023-12-02 18:53:52,891 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-12-02 18:53:52,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2023-12-02 18:53:52,907 INFO L349 Elim1Store]: treesize reduction 61, result has 1.6 percent of original size [2023-12-02 18:53:52,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 1 [2023-12-02 18:53:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:53:53,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:53,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91885297] [2023-12-02 18:53:53,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773084029] [2023-12-02 18:53:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773084029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:53,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:53,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:53,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431917536] [2023-12-02 18:53:53,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:53:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:53:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:53,142 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:53,395 INFO L93 Difference]: Finished difference Result 215 states and 224 transitions. [2023-12-02 18:53:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:53:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-12-02 18:53:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:53,397 INFO L225 Difference]: With dead ends: 215 [2023-12-02 18:53:53,397 INFO L226 Difference]: Without dead ends: 214 [2023-12-02 18:53:53,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:53:53,398 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 182 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:53,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 464 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:53:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-02 18:53:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2023-12-02 18:53:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.6095238095238096) internal successors, (169), 149 states have internal predecessors, (169), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:53:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 195 transitions. [2023-12-02 18:53:53,411 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 195 transitions. Word has length 25 [2023-12-02 18:53:53,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:53,411 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 195 transitions. [2023-12-02 18:53:53,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 195 transitions. [2023-12-02 18:53:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 18:53:53,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:53,412 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:53,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:53:53,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:53:53,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_40_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:53,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:53,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1475312342, now seen corresponding path program 1 times [2023-12-02 18:53:53,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657150796] [2023-12-02 18:53:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:53,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:53,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:53,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738798728] [2023-12-02 18:53:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:53,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:53,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:53,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:53,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:53:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:53,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 18:53:53,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:53,771 INFO L349 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2023-12-02 18:53:53,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 70 [2023-12-02 18:53:53,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:53,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:53,791 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-12-02 18:53:53,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 51 [2023-12-02 18:53:53,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 18:53:53,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-02 18:53:53,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-12-02 18:53:53,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:53,861 INFO L349 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2023-12-02 18:53:53,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 1 [2023-12-02 18:53:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:53,875 INFO L349 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2023-12-02 18:53:53,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 1 [2023-12-02 18:53:53,886 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-12-02 18:53:53,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 1 [2023-12-02 18:53:53,897 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-12-02 18:53:53,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-12-02 18:53:53,908 INFO L349 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2023-12-02 18:53:53,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 1 [2023-12-02 18:53:53,918 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-12-02 18:53:53,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 1 [2023-12-02 18:53:53,930 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-12-02 18:53:53,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 1 [2023-12-02 18:53:53,939 INFO L349 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2023-12-02 18:53:53,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 84 [2023-12-02 18:53:53,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:53:53,950 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-12-02 18:53:53,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2023-12-02 18:53:53,963 INFO L349 Elim1Store]: treesize reduction 65, result has 1.5 percent of original size [2023-12-02 18:53:53,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 1 [2023-12-02 18:53:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:53:54,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:54,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657150796] [2023-12-02 18:53:54,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738798728] [2023-12-02 18:53:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738798728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:54,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:53:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949773942] [2023-12-02 18:53:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:53:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:54,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:53:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:53:54,158 INFO L87 Difference]: Start difference. First operand 166 states and 195 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:54,402 INFO L93 Difference]: Finished difference Result 214 states and 223 transitions. [2023-12-02 18:53:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:53:54,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-12-02 18:53:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:54,404 INFO L225 Difference]: With dead ends: 214 [2023-12-02 18:53:54,404 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 18:53:54,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:53:54,405 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 178 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:54,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 415 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:53:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 18:53:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 166. [2023-12-02 18:53:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.6) internal successors, (168), 149 states have internal predecessors, (168), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:53:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 194 transitions. [2023-12-02 18:53:54,416 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 194 transitions. Word has length 26 [2023-12-02 18:53:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:54,416 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 194 transitions. [2023-12-02 18:53:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 194 transitions. [2023-12-02 18:53:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:53:54,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:54,417 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:54,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 18:53:54,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 18:53:54,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:53:54,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1509957587, now seen corresponding path program 1 times [2023-12-02 18:53:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535770459] [2023-12-02 18:53:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:54,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:54,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293784505] [2023-12-02 18:53:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:54,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:54,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:54,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:53:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:54,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 18:53:54,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:54,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-12-02 18:53:54,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-02 18:53:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2023-12-02 18:53:54,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-12-02 18:53:54,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2023-12-02 18:53:54,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2023-12-02 18:53:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:53:54,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-02 18:53:54,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,824 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 11 [2023-12-02 18:53:54,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 8 [2023-12-02 18:53:54,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-12-02 18:53:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2023-12-02 18:53:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:54,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 8 [2023-12-02 18:53:54,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2023-12-02 18:53:54,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-02 18:53:54,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:53:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:53:55,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:55,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:55,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535770459] [2023-12-02 18:53:55,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:55,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293784505] [2023-12-02 18:53:55,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293784505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:55,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:55,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:53:55,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685594713] [2023-12-02 18:53:55,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:55,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:53:55,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:53:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:53:55,054 INFO L87 Difference]: Start difference. First operand 166 states and 194 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:53:57,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:53:59,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:01,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:03,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:03,363 INFO L93 Difference]: Finished difference Result 213 states and 222 transitions. [2023-12-02 18:54:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:54:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-12-02 18:54:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:03,364 INFO L225 Difference]: With dead ends: 213 [2023-12-02 18:54:03,365 INFO L226 Difference]: Without dead ends: 212 [2023-12-02 18:54:03,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:54:03,366 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 143 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:03,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 528 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 4 Unknown, 0 Unchecked, 8.2s Time] [2023-12-02 18:54:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-02 18:54:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2023-12-02 18:54:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.5904761904761904) internal successors, (167), 149 states have internal predecessors, (167), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:54:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2023-12-02 18:54:03,378 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 27 [2023-12-02 18:54:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:03,378 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2023-12-02 18:54:03,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2023-12-02 18:54:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 18:54:03,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:03,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:03,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:54:03,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 18:54:03,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_40_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:54:03,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 435955128, now seen corresponding path program 1 times [2023-12-02 18:54:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248168580] [2023-12-02 18:54:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:03,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:03,594 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:54:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473932969] [2023-12-02 18:54:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:03,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:03,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:54:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:03,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 18:54:03,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:03,705 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:54:03,705 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 1 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 18:54:03,724 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-12-02 18:54:03,725 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 2 case distinctions, treesize of input 75 treesize of output 1 [2023-12-02 18:54:03,732 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:54:03,733 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:54:03,743 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:54:03,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:54:03,751 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:54:03,751 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:54:03,766 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-12-02 18:54:03,767 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 2 case distinctions, treesize of input 75 treesize of output 1 [2023-12-02 18:54:03,786 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-12-02 18:54:03,786 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 2 case distinctions, treesize of input 75 treesize of output 1 [2023-12-02 18:54:03,814 INFO L349 Elim1Store]: treesize reduction 135, result has 0.7 percent of original size [2023-12-02 18:54:03,814 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 3 case distinctions, treesize of input 171 treesize of output 1 [2023-12-02 18:54:03,829 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-12-02 18:54:03,830 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 2 case distinctions, treesize of input 75 treesize of output 1 [2023-12-02 18:54:03,840 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:54:03,840 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:54:03,849 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-02 18:54:03,849 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 1 case distinctions, treesize of input 27 treesize of output 1 [2023-12-02 18:54:03,865 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-12-02 18:54:03,865 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 2 case distinctions, treesize of input 75 treesize of output 1 [2023-12-02 18:54:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:54:04,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:04,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:54:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248168580] [2023-12-02 18:54:04,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:54:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473932969] [2023-12-02 18:54:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473932969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:54:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234751864] [2023-12-02 18:54:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:54:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:54:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:54:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:54:04,056 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:04,302 INFO L93 Difference]: Finished difference Result 212 states and 221 transitions. [2023-12-02 18:54:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:54:04,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-12-02 18:54:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:04,305 INFO L225 Difference]: With dead ends: 212 [2023-12-02 18:54:04,305 INFO L226 Difference]: Without dead ends: 211 [2023-12-02 18:54:04,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:54:04,306 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 170 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:04,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 464 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:54:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-02 18:54:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 166. [2023-12-02 18:54:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 149 states have internal predecessors, (166), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:54:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2023-12-02 18:54:04,319 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 28 [2023-12-02 18:54:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:04,319 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2023-12-02 18:54:04,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2023-12-02 18:54:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 18:54:04,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:04,320 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:04,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 18:54:04,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:04,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:54:04,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 629707151, now seen corresponding path program 1 times [2023-12-02 18:54:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:04,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084150255] [2023-12-02 18:54:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:04,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:04,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:54:04,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724625148] [2023-12-02 18:54:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:04,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:04,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:04,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:04,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:54:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:04,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 18:54:04,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:05,014 INFO L349 Elim1Store]: treesize reduction 372, result has 28.0 percent of original size [2023-12-02 18:54:05,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 2054 treesize of output 1153 [2023-12-02 18:54:05,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:05,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:05,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:05,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:05,335 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:54:05,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:05,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:08,140 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:08,226 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:08,236 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:08,332 INFO L349 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2023-12-02 18:54:08,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 7442 treesize of output 7385 [2023-12-02 18:54:08,858 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 9 treesize of output 7 [2023-12-02 18:54:08,893 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:54:09,019 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 9 treesize of output 7 [2023-12-02 18:54:09,144 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 9 treesize of output 7 [2023-12-02 18:54:09,204 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 9 treesize of output 7 [2023-12-02 18:54:09,298 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 9 treesize of output 7 [2023-12-02 18:54:09,409 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:54:09,441 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:54:09,611 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 9 treesize of output 7 [2023-12-02 18:54:09,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:54:09,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:54:09,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:09,860 INFO L349 Elim1Store]: treesize reduction 114, result has 22.4 percent of original size [2023-12-02 18:54:09,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 1783 treesize of output 1748 [2023-12-02 18:54:09,979 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 9 treesize of output 7 [2023-12-02 18:54:10,044 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 9 treesize of output 7 [2023-12-02 18:54:10,556 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 9 treesize of output 7 [2023-12-02 18:54:11,214 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 18:54:12,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:12,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2023-12-02 18:54:12,025 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 9 treesize of output 7 [2023-12-02 18:54:12,044 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:12,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:54:12,051 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-12-02 18:54:12,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 38 [2023-12-02 18:54:12,062 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 9 treesize of output 7 [2023-12-02 18:54:12,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:54:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:54:12,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:12,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:54:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084150255] [2023-12-02 18:54:12,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:54:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724625148] [2023-12-02 18:54:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724625148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:54:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327732858] [2023-12-02 18:54:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:54:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:54:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:54:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:54:12,663 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:14,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:16,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:18,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:20,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:54:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:20,346 INFO L93 Difference]: Finished difference Result 211 states and 220 transitions. [2023-12-02 18:54:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:54:20,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-12-02 18:54:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:20,348 INFO L225 Difference]: With dead ends: 211 [2023-12-02 18:54:20,348 INFO L226 Difference]: Without dead ends: 210 [2023-12-02 18:54:20,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:54:20,349 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 114 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:20,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 530 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 182 Invalid, 4 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 18:54:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-02 18:54:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2023-12-02 18:54:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.5714285714285714) internal successors, (165), 149 states have internal predecessors, (165), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 18:54:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2023-12-02 18:54:20,357 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 29 [2023-12-02 18:54:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:20,358 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2023-12-02 18:54:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2023-12-02 18:54:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 18:54:20,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:20,358 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:20,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 18:54:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 18:54:20,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_40_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-12-02 18:54:20,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1953914726, now seen corresponding path program 1 times [2023-12-02 18:54:20,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:20,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377191974] [2023-12-02 18:54:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:20,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:54:20,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717957529] [2023-12-02 18:54:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:20,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:20,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:20,573 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:20,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71cce353-c47d-4afc-9f5a-64ac3300031b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:54:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:20,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 18:54:20,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:21,039 INFO L349 Elim1Store]: treesize reduction 372, result has 28.0 percent of original size [2023-12-02 18:54:21,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 2054 treesize of output 1153 [2023-12-02 18:54:21,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:21,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:21,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:21,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:21,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:21,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:54:29,770 INFO L349 Elim1Store]: treesize reduction 72, result has 25.8 percent of original size [2023-12-02 18:54:29,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 193 treesize of output 224 [2023-12-02 18:54:29,877 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 9 treesize of output 7 [2023-12-02 18:54:30,058 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 9 treesize of output 7 [2023-12-02 18:54:30,431 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 18:54:30,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 44 [2023-12-02 18:54:30,486 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 18:54:30,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 35 [2023-12-02 18:54:31,794 INFO L349 Elim1Store]: treesize reduction 861, result has 12.3 percent of original size [2023-12-02 18:54:31,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 34 case distinctions, treesize of input 565 treesize of output 789 [2023-12-02 18:54:40,807 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 9 treesize of output 7 [2023-12-02 18:54:40,846 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 9 treesize of output 7 [2023-12-02 18:54:41,012 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 9 treesize of output 7 [2023-12-02 18:54:41,042 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 9 treesize of output 7 [2023-12-02 18:54:41,641 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 9 treesize of output 7 [2023-12-02 18:54:41,685 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 9 treesize of output 7 [2023-12-02 18:54:41,879 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 9 treesize of output 7 [2023-12-02 18:54:41,914 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 9 treesize of output 7 [2023-12-02 18:54:43,691 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 9 treesize of output 7 [2023-12-02 18:54:43,740 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 9 treesize of output 7 [2023-12-02 18:54:44,130 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 9 treesize of output 7 [2023-12-02 18:54:44,272 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 9 treesize of output 7 [2023-12-02 18:54:45,308 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 9 treesize of output 7 [2023-12-02 18:54:45,350 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 9 treesize of output 7 [2023-12-02 18:54:45,539 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 9 treesize of output 7 [2023-12-02 18:54:45,570 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 9 treesize of output 7 [2023-12-02 18:54:53,392 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 9 treesize of output 7 [2023-12-02 18:54:53,593 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 9 treesize of output 7 [2023-12-02 18:54:53,661 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 9 treesize of output 7 [2023-12-02 18:54:53,788 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 9 treesize of output 7 [2023-12-02 18:54:54,076 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 9 treesize of output 7 [2023-12-02 18:54:54,433 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 9 treesize of output 7 [2023-12-02 18:54:55,079 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 9 treesize of output 7 [2023-12-02 18:54:55,225 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 9 treesize of output 7 [2023-12-02 18:55:56,237 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:56,250 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:55:56,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:55:56,343 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:56,357 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:55:56,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:55:57,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:57,253 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:57,268 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:55:57,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:55:57,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:57,376 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:57,393 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:55:57,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:55:57,661 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:57,676 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:55:57,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:55:57,752 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:55:57,767 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:55:57,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:00,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:00,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:00,055 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:00,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:00,106 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:00,119 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:00,138 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:00,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:04,532 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:04,545 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:04,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:04,607 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:04,621 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:04,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:06,484 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:06,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:06,510 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:06,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:06,697 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:06,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:06,722 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:06,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:07,500 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:07,511 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:07,525 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:07,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:07,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:07,590 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:07,604 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:07,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:08,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:08,206 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:08,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:08,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:08,290 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:08,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:09,827 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:09,837 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:09,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:09,887 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:09,896 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:09,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:13,548 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:13,561 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:13,577 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:13,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:13,654 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:13,666 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:13,683 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:13,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:14,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:14,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:14,877 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:14,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:14,934 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:14,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:14,964 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:14,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:15,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:15,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:15,377 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:15,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:15,464 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:15,475 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:15,492 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:15,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:15,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:16,160 INFO L349 Elim1Store]: treesize reduction 218, result has 10.3 percent of original size [2023-12-02 18:56:16,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 246 treesize of output 278 [2023-12-02 18:56:16,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:16,906 INFO L349 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-12-02 18:56:16,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:18,619 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:18,635 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:18,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:18,720 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:18,734 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:18,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:19,846 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:19,857 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:19,866 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-12-02 18:56:19,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:19,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:19,926 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:19,948 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-12-02 18:56:19,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:22,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:22,165 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:22,178 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:22,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:22,235 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:22,247 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:22,259 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:22,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:22,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:22,599 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:22,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:22,783 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:22,793 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:22,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:23,201 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:23,216 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:23,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:23,292 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:23,309 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:23,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:25,381 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:25,392 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:25,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:25,431 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:25,441 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:25,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:27,259 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:27,268 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:27,277 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:27,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:27,323 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:27,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:27,343 INFO L349 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-12-02 18:56:27,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:27,446 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:27,464 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:27,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:27,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:27,692 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:27,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:28,900 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:28,912 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:28,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:28,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:29,007 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:29,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:30,359 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:30,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:30,385 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:30,443 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:30,455 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:30,470 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-12-02 18:56:30,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:32,610 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:32,624 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:32,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:32,805 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:32,818 INFO L349 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-12-02 18:56:32,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:33,020 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:33,035 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:33,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:33,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:33,135 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-12-02 18:56:33,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:33,991 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:34,003 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:34,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:56:34,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:56:34,261 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 18:56:34,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 21 [2023-12-02 18:59:48,234 WARN L293 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 9146 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:02:44,662 WARN L293 SmtUtils]: Spent 15.55s on a formula simplification that was a NOOP. DAG size: 16559 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:03:03,330 WARN L293 SmtUtils]: Spent 7.81s on a formula simplification that was a NOOP. DAG size: 10547 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:05:37,886 WARN L293 SmtUtils]: Spent 25.63s on a formula simplification that was a NOOP. DAG size: 17513 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 19:05:37,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:37,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:37,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,004 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:38,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 325 treesize of output 289 [2023-12-02 19:05:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,150 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 19:05:38,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 82 [2023-12-02 19:05:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,460 INFO L349 Elim1Store]: treesize reduction 157, result has 6.5 percent of original size [2023-12-02 19:05:38,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 2008 treesize of output 1978 [2023-12-02 19:05:38,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:38,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:05:38,999 INFO L349 Elim1Store]: treesize reduction 585, result has 11.0 percent of original size [2023-12-02 19:05:38,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 233 treesize of output 311 [2023-12-02 19:05:39,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:39,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:40,011 INFO L349 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2023-12-02 19:05:40,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 85 [2023-12-02 19:05:40,750 INFO L349 Elim1Store]: treesize reduction 683, result has 5.5 percent of original size [2023-12-02 19:05:40,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 331 treesize of output 377 [2023-12-02 19:05:41,321 INFO L349 Elim1Store]: treesize reduction 192, result has 2.5 percent of original size [2023-12-02 19:05:41,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 59 treesize of output 31 [2023-12-02 19:05:41,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:41,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:05:41,835 INFO L349 Elim1Store]: treesize reduction 734, result has 8.9 percent of original size [2023-12-02 19:05:41,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 462 treesize of output 522 [2023-12-02 19:05:43,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:43,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:43,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:43,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:43,506 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 19:05:43,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 171 treesize of output 135 [2023-12-02 19:05:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:44,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:44,213 INFO L349 Elim1Store]: treesize reduction 202, result has 22.3 percent of original size [2023-12-02 19:05:44,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 170 treesize of output 159 [2023-12-02 19:05:45,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:45,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:45,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:45,588 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:45,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 339 treesize of output 310 [2023-12-02 19:05:45,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:45,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:45,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:45,924 INFO L349 Elim1Store]: treesize reduction 108, result has 9.2 percent of original size [2023-12-02 19:05:45,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 203 treesize of output 181 [2023-12-02 19:05:46,064 INFO L349 Elim1Store]: treesize reduction 71, result has 6.6 percent of original size [2023-12-02 19:05:46,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 26 [2023-12-02 19:05:46,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:46,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:46,205 INFO L349 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2023-12-02 19:05:46,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1997 treesize of output 1971 [2023-12-02 19:05:46,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:46,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:46,416 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 19:05:46,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 55 [2023-12-02 19:05:46,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:46,657 INFO L349 Elim1Store]: treesize reduction 197, result has 11.3 percent of original size [2023-12-02 19:05:46,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 731 treesize of output 764 [2023-12-02 19:05:46,866 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-12-02 19:05:46,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 87 treesize of output 52 [2023-12-02 19:05:47,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:47,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:47,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:47,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:47,261 INFO L349 Elim1Store]: treesize reduction 218, result has 4.8 percent of original size [2023-12-02 19:05:47,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 668 treesize of output 631 [2023-12-02 19:05:47,783 INFO L349 Elim1Store]: treesize reduction 157, result has 6.5 percent of original size [2023-12-02 19:05:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 65 treesize of output 45 [2023-12-02 19:05:47,927 INFO L349 Elim1Store]: treesize reduction 128, result has 7.9 percent of original size [2023-12-02 19:05:47,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 40 [2023-12-02 19:05:48,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:48,133 INFO L349 Elim1Store]: treesize reduction 202, result has 22.3 percent of original size [2023-12-02 19:05:48,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 163 treesize of output 156 [2023-12-02 19:05:48,801 INFO L349 Elim1Store]: treesize reduction 180, result has 5.8 percent of original size [2023-12-02 19:05:48,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 54 treesize of output 36 [2023-12-02 19:05:49,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:49,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:49,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:49,129 INFO L349 Elim1Store]: treesize reduction 250, result has 4.2 percent of original size [2023-12-02 19:05:49,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 1256 treesize of output 1221 [2023-12-02 19:05:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:49,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:49,512 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:05:49,745 INFO L349 Elim1Store]: treesize reduction 585, result has 11.0 percent of original size [2023-12-02 19:05:49,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 229 treesize of output 207 [2023-12-02 19:05:50,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:50,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:50,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:50,747 INFO L349 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2023-12-02 19:05:50,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 131 [2023-12-02 19:05:50,842 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-12-02 19:05:50,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 16 [2023-12-02 19:05:50,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:50,919 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:50,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 183 treesize of output 156 [2023-12-02 19:05:51,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,068 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:51,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 219 treesize of output 185 [2023-12-02 19:05:51,520 INFO L349 Elim1Store]: treesize reduction 304, result has 5.0 percent of original size [2023-12-02 19:05:51,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 61 treesize of output 46 [2023-12-02 19:05:51,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,619 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 19:05:51,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 89 [2023-12-02 19:05:51,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,721 INFO L349 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2023-12-02 19:05:51,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 277 [2023-12-02 19:05:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:51,847 INFO L349 Elim1Store]: treesize reduction 71, result has 6.6 percent of original size [2023-12-02 19:05:51,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 126 [2023-12-02 19:05:52,139 INFO L349 Elim1Store]: treesize reduction 151, result has 6.8 percent of original size [2023-12-02 19:05:52,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 54 treesize of output 36 [2023-12-02 19:05:52,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,322 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:52,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 197 [2023-12-02 19:05:52,623 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 19:05:52,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 16 [2023-12-02 19:05:52,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:52,759 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:52,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 2026 treesize of output 1991 [2023-12-02 19:05:52,996 INFO L349 Elim1Store]: treesize reduction 71, result has 6.6 percent of original size [2023-12-02 19:05:52,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 26 [2023-12-02 19:05:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,178 INFO L349 Elim1Store]: treesize reduction 100, result has 4.8 percent of original size [2023-12-02 19:05:53,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 283 treesize of output 249 [2023-12-02 19:05:53,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,373 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 19:05:53,373 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 115 treesize of output 85 [2023-12-02 19:05:53,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:05:53,494 INFO L349 Elim1Store]: treesize reduction 71, result has 6.6 percent of original size [2023-12-02 19:05:53,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 187 [2023-12-02 19:05:54,700 INFO L349 Elim1Store]: treesize reduction 854, result has 5.0 percent of original size [2023-12-02 19:05:54,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 453 treesize of output 496 [2023-12-02 19:05:55,263 INFO L349 Elim1Store]: treesize reduction 169, result has 2.9 percent of original size [2023-12-02 19:05:55,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 70 treesize of output 40 [2023-12-02 19:06:19,375 WARN L293 SmtUtils]: Spent 23.64s on a formula simplification. DAG size of input: 1118 DAG size of output: 92 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 19:06:19,376 INFO L349 Elim1Store]: treesize reduction 4472, result has 2.9 percent of original size [2023-12-02 19:06:19,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 17 select indices, 17 select index equivalence classes, 1 disjoint index pairs (out of 136 index pairs), introduced 21 new quantified variables, introduced 199 case distinctions, treesize of input 901 treesize of output 1113 [2023-12-02 19:06:22,824 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:22,829 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:22,880 INFO L349 Elim1Store]: treesize reduction 217, result has 2.3 percent of original size [2023-12-02 19:06:22,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 99 treesize of output 74 [2023-12-02 19:06:23,011 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,025 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,028 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,092 INFO L349 Elim1Store]: treesize reduction 249, result has 2.0 percent of original size [2023-12-02 19:06:23,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 92 treesize of output 69 [2023-12-02 19:06:23,212 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,354 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,383 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,400 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:06:23,415 INFO L224 Elim1Store]: Index analysis took 265 ms [2023-12-02 19:06:23,788 INFO L349 Elim1Store]: treesize reduction 396, result has 3.4 percent of original size [2023-12-02 19:06:23,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 17 case distinctions, treesize of input 115 treesize of output 133 [2023-12-02 19:06:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:06:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:06:34,921 INFO L349 Elim1Store]: treesize reduction 1011, result has 2.0 percent of original size [2023-12-02 19:06:34,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 41 case distinctions, treesize of input 109398 treesize of output 106403 [2023-12-02 19:08:14,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:08:14,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:08:15,612 INFO L349 Elim1Store]: treesize reduction 883, result has 1.8 percent of original size [2023-12-02 19:08:15,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 533124 treesize of output 521992