./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/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_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:40:18,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:40:18,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:40:18,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:40:18,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:40:18,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:40:18,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:40:18,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:40:18,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:40:18,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:40:18,912 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:40:18,912 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:40:18,913 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:40:18,913 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:40:18,914 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:40:18,914 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:40:18,915 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:40:18,916 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:40:18,916 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:40:18,917 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:40:18,917 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:40:18,918 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:40:18,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:40:18,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:40:18,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:40:18,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:40:18,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:40:18,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:40:18,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:40:18,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:40:18,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:40:18,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:40:18,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:40:18,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:40:18,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:40:18,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:40:18,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:40:18,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:40:18,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:40:18,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:40:18,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:40:18,937 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:40:18,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:40:18,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:40:18,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:40:18,937 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:40:18,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:40:18,938 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_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 [2023-12-02 17:40:19,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:40:19,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:40:19,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:40:19,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:40:19,165 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:40:19,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2023-12-02 17:40:21,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:40:22,060 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:40:22,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2023-12-02 17:40:22,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data/818e4d0d1/652988018c5f49859aa18d56dbb1df52/FLAG24822c390 [2023-12-02 17:40:22,080 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data/818e4d0d1/652988018c5f49859aa18d56dbb1df52 [2023-12-02 17:40:22,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:40:22,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:40:22,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:40:22,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:40:22,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:40:22,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eae85dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22, skipping insertion in model container [2023-12-02 17:40:22,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:40:22,231 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c[1137,1150] [2023-12-02 17:40:22,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:40:22,261 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:40:22,271 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c[1137,1150] [2023-12-02 17:40:22,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:40:22,297 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:40:22,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22 WrapperNode [2023-12-02 17:40:22,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:40:22,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:40:22,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:40:22,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:40:22,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,327 INFO L138 Inliner]: procedures = 16, calls = 76, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 85 [2023-12-02 17:40:22,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:40:22,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:40:22,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:40:22,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:40:22,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:40:22,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:40:22,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:40:22,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:40:22,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (1/1) ... [2023-12-02 17:40:22,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:40:22,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:40:22,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:40:22,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:40:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:40:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:40:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_41_0 [2023-12-02 17:40:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_41_0 [2023-12-02 17:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:40:22,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:40:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:40:22,515 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:40:22,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:40:22,717 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:40:22,768 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:40:22,768 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:40:22,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:40:22 BoogieIcfgContainer [2023-12-02 17:40:22,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:40:22,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:40:22,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:40:22,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:40:22,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:40:22" (1/3) ... [2023-12-02 17:40:22,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5208e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:40:22, skipping insertion in model container [2023-12-02 17:40:22,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:40:22" (2/3) ... [2023-12-02 17:40:22,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5208e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:40:22, skipping insertion in model container [2023-12-02 17:40:22,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:40:22" (3/3) ... [2023-12-02 17:40:22,780 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bresenham-ll.c [2023-12-02 17:40:22,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:40:22,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:40:22,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:40:22,853 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;@7d35c209, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:40:22,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:40:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:40:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:40:22,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:40:22,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:40:22,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:40:22,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:40:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 984208655, now seen corresponding path program 1 times [2023-12-02 17:40:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:40:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172410745] [2023-12-02 17:40:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:22,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:40:23,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:40:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215497468] [2023-12-02 17:40:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:23,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:40:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:40:23,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:40:23,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:40:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:40:23,275 WARN L260 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-02 17:40:23,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:40:23,555 INFO L349 Elim1Store]: treesize reduction 86, result has 35.3 percent of original size [2023-12-02 17:40:23,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 95 [2023-12-02 17:40:23,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:23,694 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-12-02 17:40:23,694 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 1 case distinctions, treesize of input 33 treesize of output 11 [2023-12-02 17:40:23,830 INFO L349 Elim1Store]: treesize reduction 92, result has 30.8 percent of original size [2023-12-02 17:40:23,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 89 [2023-12-02 17:40:23,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:23,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:23,953 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-12-02 17:40:23,953 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 33 treesize of output 19 [2023-12-02 17:40:24,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,072 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 17:40:24,072 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 59 treesize of output 29 [2023-12-02 17:40:24,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:24,149 INFO L349 Elim1Store]: treesize reduction 43, result has 41.1 percent of original size [2023-12-02 17:40:24,149 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 2 case distinctions, treesize of input 195 treesize of output 37 [2023-12-02 17:40:24,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,227 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 17:40:24,227 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 59 treesize of output 29 [2023-12-02 17:40:24,254 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,287 INFO L349 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-12-02 17:40:24,288 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 59 treesize of output 22 [2023-12-02 17:40:24,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,327 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 17:40:24,328 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 59 treesize of output 1 [2023-12-02 17:40:24,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,386 INFO L349 Elim1Store]: treesize reduction 43, result has 37.7 percent of original size [2023-12-02 17:40:24,387 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 2 case distinctions, treesize of input 171 treesize of output 33 [2023-12-02 17:40:24,500 INFO L349 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2023-12-02 17:40:24,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 81 [2023-12-02 17:40:24,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:24,582 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-12-02 17:40:24,583 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 33 treesize of output 19 [2023-12-02 17:40:24,607 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,627 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 17:40:24,628 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 59 treesize of output 1 [2023-12-02 17:40:24,720 INFO L349 Elim1Store]: treesize reduction 92, result has 30.8 percent of original size [2023-12-02 17:40:24,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 89 [2023-12-02 17:40:24,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:24,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:24,774 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-02 17:40:24,775 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 1 case distinctions, treesize of input 33 treesize of output 11 [2023-12-02 17:40:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:24,840 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2023-12-02 17:40:24,841 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 2 case distinctions, treesize of input 195 treesize of output 34 [2023-12-02 17:40:24,874 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:24,895 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 17:40:24,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 1 [2023-12-02 17:40:24,973 INFO L349 Elim1Store]: treesize reduction 92, result has 30.8 percent of original size [2023-12-02 17:40:24,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 89 [2023-12-02 17:40:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,021 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-02 17:40:25,022 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 1 case distinctions, treesize of input 33 treesize of output 11 [2023-12-02 17:40:25,111 INFO L349 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2023-12-02 17:40:25,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 81 [2023-12-02 17:40:25,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,156 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 33 treesize of output 11 [2023-12-02 17:40:25,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,219 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2023-12-02 17:40:25,220 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 2 case distinctions, treesize of input 195 treesize of output 34 [2023-12-02 17:40:25,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,302 INFO L349 Elim1Store]: treesize reduction 43, result has 44.2 percent of original size [2023-12-02 17:40:25,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 403 treesize of output 41 [2023-12-02 17:40:25,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,379 INFO L349 Elim1Store]: treesize reduction 43, result has 41.1 percent of original size [2023-12-02 17:40:25,380 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 2 case distinctions, treesize of input 195 treesize of output 37 [2023-12-02 17:40:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,469 INFO L349 Elim1Store]: treesize reduction 43, result has 41.1 percent of original size [2023-12-02 17:40:25,469 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 2 case distinctions, treesize of input 195 treesize of output 37 [2023-12-02 17:40:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:25,542 INFO L349 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2023-12-02 17:40:25,542 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 2 case distinctions, treesize of input 195 treesize of output 30 [2023-12-02 17:40:25,634 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-12-02 17:40:25,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-12-02 17:40:26,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:26,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 31 [2023-12-02 17:40:26,725 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 17:40:26,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:40:26,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:40:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172410745] [2023-12-02 17:40:26,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:40:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215497468] [2023-12-02 17:40:26,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215497468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:40:26,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:40:26,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:40:26,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761203431] [2023-12-02 17:40:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:40:26,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:40:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:40:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:40:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:40:26,763 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:40:27,617 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2023-12-02 17:40:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:40:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:40:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:40:27,625 INFO L225 Difference]: With dead ends: 49 [2023-12-02 17:40:27,625 INFO L226 Difference]: Without dead ends: 29 [2023-12-02 17:40:27,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:40:27,631 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:40:27,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:40:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-02 17:40:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-02 17:40:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 17:40:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-02 17:40:27,662 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2023-12-02 17:40:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:40:27,662 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-02 17:40:27,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-02 17:40:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:40:27,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:40:27,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:40:27,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:40:27,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:40:27,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:40:27,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:40:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 896673725, now seen corresponding path program 1 times [2023-12-02 17:40:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:40:27,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338984453] [2023-12-02 17:40:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:27,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:40:27,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:40:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403480009] [2023-12-02 17:40:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:27,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:40:27,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:40:27,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:40:27,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:40:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:40:28,312 WARN L260 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 186 conjunts are in the unsatisfiable core [2023-12-02 17:40:28,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:40:28,354 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-12-02 17:40:28,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-12-02 17:40:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:28,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 20 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 34 [2023-12-02 17:40:29,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 64 [2023-12-02 17:40:29,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2023-12-02 17:40:36,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:36,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 166 [2023-12-02 17:40:37,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 183 [2023-12-02 17:40:37,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 90 [2023-12-02 17:40:37,167 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 57 treesize of output 51 [2023-12-02 17:40:37,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2023-12-02 17:40:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:38,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 145 [2023-12-02 17:40:38,691 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 126 treesize of output 114 [2023-12-02 17:40:38,699 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 109 treesize of output 97 [2023-12-02 17:40:38,708 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 93 treesize of output 91 [2023-12-02 17:40:38,713 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 106 treesize of output 94 [2023-12-02 17:40:38,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 84 [2023-12-02 17:40:38,729 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 78 treesize of output 76 [2023-12-02 17:40:38,735 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 84 treesize of output 78 [2023-12-02 17:40:38,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:38,750 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 72 treesize of output 77 [2023-12-02 17:40:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:40:39,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:40:54,180 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_int| c_func_to_recursive_line_0_to_41_0_~v.base))) (let ((.cse11 (* (select (select |c_#memory_int| c_func_to_recursive_line_0_to_41_0_~Y.base) c_func_to_recursive_line_0_to_41_0_~Y.offset) 2)) (.cse0 (select .cse10 c_func_to_recursive_line_0_to_41_0_~v.offset))) (and (or (< .cse0 0) (forall ((func_to_recursive_line_0_to_41_0_~xy.offset Int) (func_to_recursive_line_0_to_41_0_~yx.offset Int)) (let ((.cse3 (let ((.cse6 (let ((.cse8 (store |c_#memory_int| c_func_to_recursive_line_0_to_41_0_~v.base (store .cse10 c_func_to_recursive_line_0_to_41_0_~v.offset (+ .cse11 .cse0 (* (- 2) (select (select |c_#memory_int| c_func_to_recursive_line_0_to_41_0_~X.base) c_func_to_recursive_line_0_to_41_0_~X.offset))))))) (store .cse8 c_func_to_recursive_line_0_to_41_0_~y.base (let ((.cse9 (select .cse8 c_func_to_recursive_line_0_to_41_0_~y.base))) (store .cse9 c_func_to_recursive_line_0_to_41_0_~y.offset (+ (select .cse9 c_func_to_recursive_line_0_to_41_0_~y.offset) 1))))))) (let ((.cse7 (select .cse6 c_func_to_recursive_line_0_to_41_0_~x.base))) (let ((.cse5 (+ 1 (select .cse7 c_func_to_recursive_line_0_to_41_0_~x.offset)))) (let ((.cse4 (store .cse6 c_func_to_recursive_line_0_to_41_0_~x.base (store .cse7 c_func_to_recursive_line_0_to_41_0_~x.offset .cse5)))) (store .cse4 c_func_to_recursive_line_0_to_41_0_~yx.base (store (select .cse4 c_func_to_recursive_line_0_to_41_0_~yx.base) func_to_recursive_line_0_to_41_0_~yx.offset (* (select (select .cse4 c_func_to_recursive_line_0_to_41_0_~Y.base) c_func_to_recursive_line_0_to_41_0_~Y.offset) .cse5))))))))) (let ((.cse2 (* (select (select .cse3 c_func_to_recursive_line_0_to_41_0_~y.base) c_func_to_recursive_line_0_to_41_0_~y.offset) (select (select .cse3 c_func_to_recursive_line_0_to_41_0_~X.base) c_func_to_recursive_line_0_to_41_0_~X.offset)))) (let ((.cse1 (store .cse3 c_func_to_recursive_line_0_to_41_0_~xy.base (store (select .cse3 c_func_to_recursive_line_0_to_41_0_~xy.base) func_to_recursive_line_0_to_41_0_~xy.offset .cse2)))) (= (+ (* 2 (select (select .cse1 c_func_to_recursive_line_0_to_41_0_~yx.base) func_to_recursive_line_0_to_41_0_~yx.offset)) (* 2 (select (select .cse1 c_func_to_recursive_line_0_to_41_0_~Y.base) c_func_to_recursive_line_0_to_41_0_~Y.offset))) (+ (select (select .cse1 c_func_to_recursive_line_0_to_41_0_~X.base) c_func_to_recursive_line_0_to_41_0_~X.offset) (select (select .cse1 c_func_to_recursive_line_0_to_41_0_~v.base) c_func_to_recursive_line_0_to_41_0_~v.offset) (* 2 .cse2)))))))) (or (forall ((func_to_recursive_line_0_to_41_0_~xy.offset Int) (func_to_recursive_line_0_to_41_0_~yx.offset Int)) (let ((.cse14 (let ((.cse17 (store |c_#memory_int| c_func_to_recursive_line_0_to_41_0_~v.base (store .cse10 c_func_to_recursive_line_0_to_41_0_~v.offset (+ .cse11 .cse0))))) (let ((.cse18 (select .cse17 c_func_to_recursive_line_0_to_41_0_~x.base))) (let ((.cse16 (+ (select .cse18 c_func_to_recursive_line_0_to_41_0_~x.offset) 1))) (let ((.cse15 (store .cse17 c_func_to_recursive_line_0_to_41_0_~x.base (store .cse18 c_func_to_recursive_line_0_to_41_0_~x.offset .cse16)))) (store .cse15 c_func_to_recursive_line_0_to_41_0_~yx.base (store (select .cse15 c_func_to_recursive_line_0_to_41_0_~yx.base) func_to_recursive_line_0_to_41_0_~yx.offset (* .cse16 (select (select .cse15 c_func_to_recursive_line_0_to_41_0_~Y.base) c_func_to_recursive_line_0_to_41_0_~Y.offset)))))))))) (let ((.cse12 (* (select (select .cse14 c_func_to_recursive_line_0_to_41_0_~X.base) c_func_to_recursive_line_0_to_41_0_~X.offset) (select (select .cse14 c_func_to_recursive_line_0_to_41_0_~y.base) c_func_to_recursive_line_0_to_41_0_~y.offset)))) (let ((.cse13 (store .cse14 c_func_to_recursive_line_0_to_41_0_~xy.base (store (select .cse14 c_func_to_recursive_line_0_to_41_0_~xy.base) func_to_recursive_line_0_to_41_0_~xy.offset .cse12)))) (= (+ (* .cse12 2) (select (select .cse13 c_func_to_recursive_line_0_to_41_0_~X.base) c_func_to_recursive_line_0_to_41_0_~X.offset) (select (select .cse13 c_func_to_recursive_line_0_to_41_0_~v.base) c_func_to_recursive_line_0_to_41_0_~v.offset)) (+ (* (select (select .cse13 c_func_to_recursive_line_0_to_41_0_~yx.base) func_to_recursive_line_0_to_41_0_~yx.offset) 2) (* 2 (select (select .cse13 c_func_to_recursive_line_0_to_41_0_~Y.base) c_func_to_recursive_line_0_to_41_0_~Y.offset)))))))) (< 0 (+ .cse0 1)))))) is different from false [2023-12-02 17:40:54,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:40:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338984453] [2023-12-02 17:40:54,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:40:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403480009] [2023-12-02 17:40:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403480009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:40:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074801019] [2023-12-02 17:40:54,505 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-12-02 17:40:54,505 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:40:54,508 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 17:40:54,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:40:54,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 17:40:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130998124] [2023-12-02 17:40:54,509 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:40:54,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:40:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:40:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:40:54,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=288, Unknown=8, NotChecked=34, Total=380 [2023-12-02 17:40:54,511 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 14 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:40:56,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:40:57,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:41:00,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:41:02,452 WARN L539 Checker$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 17:41:04,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:41:10,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 17:41:17,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:19,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:21,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:41:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:41:22,485 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2023-12-02 17:41:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:41:22,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 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 17:41:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:41:22,545 INFO L225 Difference]: With dead ends: 41 [2023-12-02 17:41:22,545 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 17:41:22,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=79, Invalid=467, Unknown=10, NotChecked=44, Total=600 [2023-12-02 17:41:22,546 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:41:22,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 115 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 8 Unknown, 0 Unchecked, 21.6s Time] [2023-12-02 17:41:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 17:41:22,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-12-02 17:41:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.125) internal successors, (27), 27 states have internal predecessors, (27), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 17:41:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-12-02 17:41:22,557 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2023-12-02 17:41:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:41:22,557 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-12-02 17:41:22,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:41:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-12-02 17:41:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:41:22,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:41:22,558 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:41:22,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:41:22,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:22,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:41:22,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:41:22,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1264213224, now seen corresponding path program 1 times [2023-12-02 17:41:22,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:41:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899187234] [2023-12-02 17:41:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:22,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:41:22,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:41:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013580278] [2023-12-02 17:41:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:22,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:22,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:41:22,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:41:22,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:41:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:41:22,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-02 17:41:22,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:41:22,974 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-12-02 17:41:22,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-12-02 17:41:23,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:23,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 20 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 34 [2023-12-02 17:41:23,215 WARN L876 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_0_to_41_0_~yx.offset Int)) (= (store (store |c_old(#memory_int)| |c_func_to_recursive_line_0_to_41_0_#in~yx.base| (store (select |c_old(#memory_int)| |c_func_to_recursive_line_0_to_41_0_#in~yx.base|) func_to_recursive_line_0_to_41_0_~yx.offset (* (select (select |c_old(#memory_int)| |c_func_to_recursive_line_0_to_41_0_#in~x.base|) |c_func_to_recursive_line_0_to_41_0_#in~x.offset|) (select (select |c_old(#memory_int)| |c_func_to_recursive_line_0_to_41_0_#in~Y.base|) |c_func_to_recursive_line_0_to_41_0_#in~Y.offset|)))) |c_func_to_recursive_line_0_to_41_0_#in~xy.base| (select |c_#memory_int| |c_func_to_recursive_line_0_to_41_0_#in~xy.base|)) |c_#memory_int|)) is different from true [2023-12-02 17:41:23,295 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2023-12-02 17:41:23,296 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 60 [2023-12-02 17:41:23,361 INFO L349 Elim1Store]: treesize reduction 36, result has 59.1 percent of original size [2023-12-02 17:41:23,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 85 [2023-12-02 17:41:23,509 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 7 treesize of output 5 [2023-12-02 17:41:23,560 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 5 treesize of output 3 [2023-12-02 17:41:23,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:41:23,711 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 17 treesize of output 21 [2023-12-02 17:41:23,753 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 5 treesize of output 3 [2023-12-02 17:41:23,808 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 7 treesize of output 5 [2023-12-02 17:41:23,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:41:23,840 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 17 treesize of output 21 [2023-12-02 17:41:24,051 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 5 treesize of output 3 [2023-12-02 17:41:24,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 64 [2023-12-02 17:41:24,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 59 [2023-12-02 17:41:24,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:24,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 37 [2023-12-02 17:41:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:41:24,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:41:32,868 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#xy~0#1.offset| Int) (|ULTIMATE.start_main_~#yx~0#1.offset| Int) (v_func_to_recursive_line_0_to_41_0_~yx.offset_9 Int) (v_ArrVal_266 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#yx~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#yx~0#1.base|) v_func_to_recursive_line_0_to_41_0_~yx.offset_9 (* (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#Y~0#1.base|) |c_ULTIMATE.start_main_~#Y~0#1.offset|)))))) (let ((.cse2 (store v_ArrVal_266 |ULTIMATE.start_main_~#xy~0#1.offset| (let ((.cse5 (store .cse4 |c_ULTIMATE.start_main_~#xy~0#1.base| v_ArrVal_266))) (* (select (select .cse5 |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|) (select (select .cse5 |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|)))))) (let ((.cse3 (store .cse4 |c_ULTIMATE.start_main_~#xy~0#1.base| .cse2))) (let ((.cse1 (* (select (select .cse3 |c_ULTIMATE.start_main_~#Y~0#1.base|) |c_ULTIMATE.start_main_~#Y~0#1.offset|) (select (select .cse3 |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|)))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#xy~0#1.base| .cse2) |c_ULTIMATE.start_main_~#yx~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#yx~0#1.base|) |ULTIMATE.start_main_~#yx~0#1.offset| .cse1)))) (= (+ (* (select (select .cse0 |c_ULTIMATE.start_main_~#Y~0#1.base|) |c_ULTIMATE.start_main_~#Y~0#1.offset|) 2) (* 2 .cse1) (* 2 (select (select .cse0 |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#X~0#1.base|) |c_ULTIMATE.start_main_~#X~0#1.offset|) (* 2 (select (select .cse0 |c_ULTIMATE.start_main_~#xy~0#1.base|) |ULTIMATE.start_main_~#xy~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#v~0#1.base|) |c_ULTIMATE.start_main_~#v~0#1.offset|))))))))) is different from false [2023-12-02 17:41:32,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:41:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899187234] [2023-12-02 17:41:32,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:41:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013580278] [2023-12-02 17:41:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013580278] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:41:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1578220941] [2023-12-02 17:41:32,873 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-12-02 17:41:32,873 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:41:32,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:41:32,877 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:41:32,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:41:33,502 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_0_to_41_0 with input of size 150 for LOIs [2023-12-02 17:41:34,311 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 294 for LOIs [2023-12-02 17:41:37,449 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:41:52,670 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 289 DAG size of output: 160 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:42:28,600 WARN L293 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 294 DAG size of output: 253 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:42:58,158 WARN L293 SmtUtils]: Spent 17.48s on a formula simplification. DAG size of input: 296 DAG size of output: 255 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:43:19,734 WARN L293 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 298 DAG size of output: 250 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:43:56,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '459#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_#memory_int_63| (Array Int (Array Int Int))) (|v_#length_14| (Array Int Int)) (|v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| Int) (|v_#valid_29| (Array Int Int)) (|v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| Int)) (and (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) (= (select |v_#valid_29| 2) 1) (= (select (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0) (= (select (store (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (= 15 (select |v_#length_14| 2)) (= (select |v_#valid_29| 3) 1) (= (select |v_#length_14| 3) 12) (= (select (store (store (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (= (select |v_#valid_29| 1) 1) (= |#memory_int| (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0))))) (= |#valid| (store (store (store (store (store (store (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| 1)) (= (select |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0) (= (+ (* 2 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0))) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6|) 0) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)) (+ (* 2 (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0)) (* 2 (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) (= 2 (select |v_#length_14| 1)) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) (= (select (store (store (store (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6|) 0) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) (= (select (store (store (store (store (store (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0) (= 0 (select (store (store (store (store (store |v_#valid_29| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6| 1) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|)) (<= (+ (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0) 1) (select (select (store (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| (store (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0 (* (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0) (select (select (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0 (* (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0)))) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6|) 0)) (= (select |v_#valid_29| 0) 0) (not (= (+ (* 2 (select (select |#memory_int| |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6|) 0)) (* 2 (select (select |#memory_int| |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6|) 0)) (* 2 (select (select |#memory_int| |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6|) 0))) (+ (select (select |#memory_int| |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6|) 0) (select (select |#memory_int| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) 0) (* 2 (select (select |#memory_int| |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6|) 0))))) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6|) (= (store (store (store (store (store (store (store |v_#length_14| |v_ULTIMATE.start_main_~#X~0#1.base_BEFORE_CALL_6| 4) |v_ULTIMATE.start_main_~#Y~0#1.base_BEFORE_CALL_6| 4) |v_ULTIMATE.start_main_~#x~0#1.base_BEFORE_CALL_6| 8) |v_ULTIMATE.start_main_~#y~0#1.base_BEFORE_CALL_6| 8) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6| 8) |v_ULTIMATE.start_main_~#xy~0#1.base_BEFORE_CALL_6| 8) |v_ULTIMATE.start_main_~#yx~0#1.base_BEFORE_CALL_6| 8) |#length|) (<= (+ |#StackHeapBarrier| 1) |v_ULTIMATE.start_main_~#v~0#1.base_BEFORE_CALL_6|))) (exists ((|v_#memory_int_62| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_62| 1) 1) 0) (= (select (select |v_#memory_int_62| 1) 0) 48))))' at error location [2023-12-02 17:43:56,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:43:56,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:43:56,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 17:43:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141905191] [2023-12-02 17:43:56,628 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:43:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:43:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:43:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=558, Unknown=27, NotChecked=98, Total=756 [2023-12-02 17:43:56,630 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:43:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:57,208 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2023-12-02 17:43:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:43:57,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-02 17:43:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:57,210 INFO L225 Difference]: With dead ends: 48 [2023-12-02 17:43:57,210 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 17:43:57,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 147.9s TimeCoverageRelationStatistics Valid=107, Invalid=803, Unknown=28, NotChecked=118, Total=1056 [2023-12-02 17:43:57,211 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:57,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 61 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2023-12-02 17:43:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 17:43:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-12-02 17:43:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 17:43:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-12-02 17:43:57,227 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2023-12-02 17:43:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:57,227 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-12-02 17:43:57,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:43:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-12-02 17:43:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 17:43:57,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:57,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 17:43:57,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:43:57,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:57,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:43:57,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -890406677, now seen corresponding path program 2 times [2023-12-02 17:43:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:57,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022669002] [2023-12-02 17:43:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:57,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820893434] [2023-12-02 17:43:57,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:43:57,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:57,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:57,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:43:58,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 17:43:58,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:43:58,701 WARN L260 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 290 conjunts are in the unsatisfiable core [2023-12-02 17:43:58,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:58,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:58,787 INFO L349 Elim1Store]: treesize reduction 43, result has 41.1 percent of original size [2023-12-02 17:43:58,787 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 2 case distinctions, treesize of input 195 treesize of output 37 [2023-12-02 17:43:58,808 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:58,853 INFO L349 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-12-02 17:43:58,853 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 59 treesize of output 29 [2023-12-02 17:43:58,946 INFO L349 Elim1Store]: treesize reduction 92, result has 30.8 percent of original size [2023-12-02 17:43:58,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 89 [2023-12-02 17:43:58,982 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:43:59,117 INFO L349 Elim1Store]: treesize reduction 86, result has 35.3 percent of original size [2023-12-02 17:43:59,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 95 [2023-12-02 17:43:59,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,272 INFO L349 Elim1Store]: treesize reduction 43, result has 44.2 percent of original size [2023-12-02 17:43:59,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 403 treesize of output 41 [2023-12-02 17:43:59,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,356 INFO L349 Elim1Store]: treesize reduction 43, result has 41.1 percent of original size [2023-12-02 17:43:59,356 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 2 case distinctions, treesize of input 195 treesize of output 37 [2023-12-02 17:43:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,446 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2023-12-02 17:43:59,446 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 2 case distinctions, treesize of input 195 treesize of output 34 [2023-12-02 17:43:59,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,535 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2023-12-02 17:43:59,535 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 2 case distinctions, treesize of input 195 treesize of output 34 [2023-12-02 17:43:59,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,664 INFO L349 Elim1Store]: treesize reduction 43, result has 41.1 percent of original size [2023-12-02 17:43:59,664 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 2 case distinctions, treesize of input 195 treesize of output 37 [2023-12-02 17:43:59,764 INFO L349 Elim1Store]: treesize reduction 86, result has 35.3 percent of original size [2023-12-02 17:43:59,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 95 [2023-12-02 17:43:59,935 INFO L349 Elim1Store]: treesize reduction 86, result has 35.3 percent of original size [2023-12-02 17:43:59,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 95 [2023-12-02 17:43:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:59,983 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:59,985 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:59,986 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 33 treesize of output 11 [2023-12-02 17:44:00,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:00,071 INFO L349 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2023-12-02 17:44:00,071 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 59 treesize of output 26 [2023-12-02 17:44:00,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:00,146 INFO L349 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2023-12-02 17:44:00,146 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 2 case distinctions, treesize of input 195 treesize of output 30 [2023-12-02 17:44:00,248 INFO L349 Elim1Store]: treesize reduction 92, result has 30.8 percent of original size [2023-12-02 17:44:00,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 89 [2023-12-02 17:44:00,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:00,381 INFO L349 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-12-02 17:44:00,381 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 59 treesize of output 22 [2023-12-02 17:44:00,475 INFO L349 Elim1Store]: treesize reduction 92, result has 30.8 percent of original size [2023-12-02 17:44:00,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 152 treesize of output 89 [2023-12-02 17:44:00,570 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:00,618 INFO L349 Elim1Store]: treesize reduction 43, result has 37.7 percent of original size [2023-12-02 17:44:00,619 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 2 case distinctions, treesize of input 171 treesize of output 33 [2023-12-02 17:44:00,659 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:00,686 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 17:44:00,687 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 59 treesize of output 1 [2023-12-02 17:44:00,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:00,723 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 17:44:00,723 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 59 treesize of output 1 [2023-12-02 17:44:00,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:00,756 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-12-02 17:44:00,756 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 59 treesize of output 1 [2023-12-02 17:44:00,805 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-12-02 17:44:00,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-12-02 17:44:01,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:01,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:01,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2023-12-02 17:44:12,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:14,598 INFO L349 Elim1Store]: treesize reduction 852, result has 16.4 percent of original size [2023-12-02 17:44:14,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 14 select indices, 14 select index equivalence classes, 42 disjoint index pairs (out of 91 index pairs), introduced 16 new quantified variables, introduced 63 case distinctions, treesize of input 229 treesize of output 368 [2023-12-02 17:44:15,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:15,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:15,770 INFO L349 Elim1Store]: treesize reduction 456, result has 22.2 percent of original size [2023-12-02 17:44:15,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 282 treesize of output 443 [2023-12-02 17:44:17,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:17,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:18,115 INFO L349 Elim1Store]: treesize reduction 77, result has 34.2 percent of original size [2023-12-02 17:44:18,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 169 treesize of output 164 [2023-12-02 17:44:18,218 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 17 treesize of output 15 [2023-12-02 17:44:18,306 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 17 treesize of output 15 [2023-12-02 17:44:18,383 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 17 treesize of output 15 [2023-12-02 17:44:18,849 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 61 treesize of output 55 [2023-12-02 17:44:19,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:19,056 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 11 treesize of output 7 [2023-12-02 17:44:19,175 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 17:44:19,176 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 66 treesize of output 58 [2023-12-02 17:44:21,522 INFO L349 Elim1Store]: treesize reduction 292, result has 21.5 percent of original size [2023-12-02 17:44:21,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 45 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 345 treesize of output 329 [2023-12-02 17:44:23,385 INFO L349 Elim1Store]: treesize reduction 340, result has 21.8 percent of original size [2023-12-02 17:44:23,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 47 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 37 case distinctions, treesize of input 152 treesize of output 208 [2023-12-02 17:44:23,996 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:44:23,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 167 treesize of output 196 [2023-12-02 17:44:24,717 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:44:25,465 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:44:25,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 167 treesize of output 196 [2023-12-02 17:44:26,485 INFO L349 Elim1Store]: treesize reduction 332, result has 22.2 percent of original size [2023-12-02 17:44:26,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 197 [2023-12-02 17:44:26,836 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:44:27,512 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:44:27,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 144 treesize of output 185 [2023-12-02 17:44:28,328 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:44:28,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 144 treesize of output 185 [2023-12-02 17:44:32,554 INFO L349 Elim1Store]: treesize reduction 344, result has 20.9 percent of original size [2023-12-02 17:44:32,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 44 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 40 case distinctions, treesize of input 399 treesize of output 367 [2023-12-02 17:44:36,045 INFO L349 Elim1Store]: treesize reduction 368, result has 20.5 percent of original size [2023-12-02 17:44:36,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 44 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 40 case distinctions, treesize of input 345 treesize of output 337 [2023-12-02 17:44:44,828 INFO L349 Elim1Store]: treesize reduction 456, result has 18.3 percent of original size [2023-12-02 17:44:44,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 45 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 53 case distinctions, treesize of input 406 treesize of output 381 [2023-12-02 17:44:46,900 INFO L349 Elim1Store]: treesize reduction 396, result has 18.7 percent of original size [2023-12-02 17:44:46,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 46 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 52 case distinctions, treesize of input 352 treesize of output 343 [2023-12-02 17:44:48,808 INFO L349 Elim1Store]: treesize reduction 484, result has 18.0 percent of original size [2023-12-02 17:44:48,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 45 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 53 case distinctions, treesize of input 352 treesize of output 351 [2023-12-02 17:44:50,554 INFO L349 Elim1Store]: treesize reduction 384, result has 18.5 percent of original size [2023-12-02 17:44:50,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 41 case distinctions, treesize of input 174 treesize of output 210 [2023-12-02 17:44:51,707 INFO L349 Elim1Store]: treesize reduction 300, result has 16.7 percent of original size [2023-12-02 17:44:51,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 169 treesize of output 182 [2023-12-02 17:44:52,277 INFO L349 Elim1Store]: treesize reduction 300, result has 16.7 percent of original size [2023-12-02 17:44:52,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 169 treesize of output 182 [2023-12-02 17:44:52,853 INFO L349 Elim1Store]: treesize reduction 348, result has 20.0 percent of original size [2023-12-02 17:44:52,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 47 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 37 case distinctions, treesize of input 153 treesize of output 201 [2023-12-02 17:44:53,989 INFO L349 Elim1Store]: treesize reduction 440, result has 19.4 percent of original size [2023-12-02 17:44:53,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 50 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 48 case distinctions, treesize of input 159 treesize of output 222 [2023-12-02 17:44:55,269 INFO L349 Elim1Store]: treesize reduction 348, result has 20.0 percent of original size [2023-12-02 17:44:55,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 47 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 37 case distinctions, treesize of input 153 treesize of output 201 [2023-12-02 17:44:56,871 INFO L349 Elim1Store]: treesize reduction 384, result has 18.5 percent of original size [2023-12-02 17:44:56,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 41 case distinctions, treesize of input 174 treesize of output 210 [2023-12-02 17:44:57,596 INFO L349 Elim1Store]: treesize reduction 384, result has 18.5 percent of original size [2023-12-02 17:44:57,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 41 case distinctions, treesize of input 151 treesize of output 199 [2023-12-02 17:44:58,940 INFO L349 Elim1Store]: treesize reduction 292, result has 18.9 percent of original size [2023-12-02 17:44:58,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 146 treesize of output 179 [2023-12-02 17:45:00,067 INFO L349 Elim1Store]: treesize reduction 384, result has 18.5 percent of original size [2023-12-02 17:45:00,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 41 case distinctions, treesize of input 151 treesize of output 199 [2023-12-02 17:45:00,547 INFO L349 Elim1Store]: treesize reduction 340, result has 20.4 percent of original size [2023-12-02 17:45:00,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 130 treesize of output 190 [2023-12-02 17:45:02,179 INFO L349 Elim1Store]: treesize reduction 432, result has 19.7 percent of original size [2023-12-02 17:45:02,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 51 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 47 case distinctions, treesize of input 136 treesize of output 211 [2023-12-02 17:45:03,086 INFO L349 Elim1Store]: treesize reduction 292, result has 18.9 percent of original size [2023-12-02 17:45:03,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 146 treesize of output 179 [2023-12-02 17:45:03,479 INFO L349 Elim1Store]: treesize reduction 340, result has 20.4 percent of original size [2023-12-02 17:45:03,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 130 treesize of output 190 [2023-12-02 17:45:16,041 INFO L349 Elim1Store]: treesize reduction 784, result has 18.2 percent of original size [2023-12-02 17:45:16,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 44 disjoint index pairs (out of 136 index pairs), introduced 18 new quantified variables, introduced 84 case distinctions, treesize of input 487 treesize of output 502 [2023-12-02 17:45:25,926 INFO L349 Elim1Store]: treesize reduction 800, result has 17.3 percent of original size [2023-12-02 17:45:25,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 43 disjoint index pairs (out of 136 index pairs), introduced 18 new quantified variables, introduced 85 case distinctions, treesize of input 487 treesize of output 494 [2023-12-02 17:45:34,916 INFO L349 Elim1Store]: treesize reduction 368, result has 19.1 percent of original size [2023-12-02 17:45:34,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 45 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 345 treesize of output 329 [2023-12-02 17:45:37,948 INFO L349 Elim1Store]: treesize reduction 292, result has 19.8 percent of original size [2023-12-02 17:45:37,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 46 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 38 case distinctions, treesize of input 345 treesize of output 321 [2023-12-02 17:45:40,347 INFO L349 Elim1Store]: treesize reduction 344, result has 19.4 percent of original size [2023-12-02 17:45:40,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 45 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 399 treesize of output 359 [2023-12-02 17:45:41,435 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:45:41,614 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:45:41,975 INFO L349 Elim1Store]: treesize reduction 300, result has 16.7 percent of original size [2023-12-02 17:45:41,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 167 treesize of output 180 [2023-12-02 17:45:42,463 INFO L349 Elim1Store]: treesize reduction 300, result has 16.7 percent of original size [2023-12-02 17:45:42,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 167 treesize of output 180 [2023-12-02 17:45:42,929 INFO L349 Elim1Store]: treesize reduction 340, result has 20.4 percent of original size [2023-12-02 17:45:42,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 152 treesize of output 200 [2023-12-02 17:45:43,797 INFO L349 Elim1Store]: treesize reduction 340, result has 20.4 percent of original size [2023-12-02 17:45:43,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 189 [2023-12-02 17:45:44,622 INFO L349 Elim1Store]: treesize reduction 292, result has 18.9 percent of original size [2023-12-02 17:45:44,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 144 treesize of output 177 [2023-12-02 17:45:45,457 INFO L349 Elim1Store]: treesize reduction 292, result has 18.9 percent of original size [2023-12-02 17:45:45,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 144 treesize of output 177 [2023-12-02 17:45:47,259 INFO L349 Elim1Store]: treesize reduction 636, result has 19.7 percent of original size [2023-12-02 17:45:47,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 44 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 67 case distinctions, treesize of input 480 treesize of output 480 [2023-12-02 17:45:59,178 INFO L349 Elim1Store]: treesize reduction 644, result has 19.5 percent of original size [2023-12-02 17:45:59,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 43 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 68 case distinctions, treesize of input 480 treesize of output 480 [2023-12-02 17:46:03,651 INFO L349 Elim1Store]: treesize reduction 652, result has 19.3 percent of original size [2023-12-02 17:46:03,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 42 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 69 case distinctions, treesize of input 475 treesize of output 475 [2023-12-02 17:46:09,685 INFO L349 Elim1Store]: treesize reduction 652, result has 19.3 percent of original size [2023-12-02 17:46:09,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 42 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 69 case distinctions, treesize of input 475 treesize of output 475 [2023-12-02 17:46:15,137 INFO L349 Elim1Store]: treesize reduction 368, result has 18.4 percent of original size [2023-12-02 17:46:15,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 394 treesize of output 354 [2023-12-02 17:46:18,256 INFO L349 Elim1Store]: treesize reduction 392, result has 18.2 percent of original size [2023-12-02 17:46:18,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 340 treesize of output 324 [2023-12-02 17:46:19,122 INFO L349 Elim1Store]: treesize reduction 316, result has 18.6 percent of original size [2023-12-02 17:46:19,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 41 case distinctions, treesize of input 340 treesize of output 316 [2023-12-02 17:46:20,046 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:20,321 INFO L349 Elim1Store]: treesize reduction 292, result has 18.9 percent of original size [2023-12-02 17:46:20,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 146 treesize of output 179 [2023-12-02 17:46:20,864 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:21,246 INFO L349 Elim1Store]: treesize reduction 376, result has 18.8 percent of original size [2023-12-02 17:46:21,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 44 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 40 case distinctions, treesize of input 152 treesize of output 200 [2023-12-02 17:46:22,597 INFO L349 Elim1Store]: treesize reduction 292, result has 18.9 percent of original size [2023-12-02 17:46:22,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 146 treesize of output 179 [2023-12-02 17:46:25,555 INFO L349 Elim1Store]: treesize reduction 220, result has 21.7 percent of original size [2023-12-02 17:46:25,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 29 case distinctions, treesize of input 333 treesize of output 302 [2023-12-02 17:46:26,320 INFO L349 Elim1Store]: treesize reduction 264, result has 21.4 percent of original size [2023-12-02 17:46:26,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 387 treesize of output 340 [2023-12-02 17:46:29,281 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:46:29,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 333 treesize of output 310 [2023-12-02 17:46:29,758 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:30,423 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:46:30,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 145 treesize of output 186 [2023-12-02 17:46:33,199 INFO L349 Elim1Store]: treesize reduction 652, result has 19.3 percent of original size [2023-12-02 17:46:33,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 42 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 69 case distinctions, treesize of input 487 treesize of output 487 [2023-12-02 17:46:41,290 INFO L349 Elim1Store]: treesize reduction 368, result has 20.5 percent of original size [2023-12-02 17:46:41,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 44 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 40 case distinctions, treesize of input 345 treesize of output 337 [2023-12-02 17:46:42,242 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:42,400 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:42,715 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:46:42,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 144 treesize of output 185 [2023-12-02 17:46:43,577 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:43,892 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:46:43,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 144 treesize of output 185 [2023-12-02 17:46:45,020 INFO L349 Elim1Store]: treesize reduction 332, result has 22.2 percent of original size [2023-12-02 17:46:45,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 197 [2023-12-02 17:46:45,639 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:46:45,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 167 treesize of output 196 [2023-12-02 17:46:46,259 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:46,646 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:46:46,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 167 treesize of output 196 [2023-12-02 17:46:47,928 INFO L349 Elim1Store]: treesize reduction 340, result has 21.8 percent of original size [2023-12-02 17:46:47,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 47 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 37 case distinctions, treesize of input 152 treesize of output 208 [2023-12-02 17:46:48,248 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-02 17:46:52,192 INFO L349 Elim1Store]: treesize reduction 292, result has 21.5 percent of original size [2023-12-02 17:46:52,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 45 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 345 treesize of output 329 [2023-12-02 17:46:53,245 INFO L349 Elim1Store]: treesize reduction 344, result has 20.9 percent of original size [2023-12-02 17:46:53,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 44 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 40 case distinctions, treesize of input 399 treesize of output 367 [2023-12-02 17:46:57,723 INFO L349 Elim1Store]: treesize reduction 620, result has 22.5 percent of original size [2023-12-02 17:46:57,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 43 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 68 case distinctions, treesize of input 480 treesize of output 504 [2023-12-02 17:47:04,869 INFO L349 Elim1Store]: treesize reduction 644, result has 19.5 percent of original size [2023-12-02 17:47:04,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 43 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 68 case distinctions, treesize of input 480 treesize of output 480 [2023-12-02 17:47:11,355 INFO L349 Elim1Store]: treesize reduction 520, result has 20.9 percent of original size [2023-12-02 17:47:11,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 41 disjoint index pairs (out of 105 index pairs), introduced 16 new quantified variables, introduced 54 case distinctions, treesize of input 468 treesize of output 453 [2023-12-02 17:47:15,765 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:47:15,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 145 treesize of output 186 [2023-12-02 17:47:16,619 INFO L349 Elim1Store]: treesize reduction 284, result has 21.1 percent of original size [2023-12-02 17:47:16,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 333 treesize of output 310 [2023-12-02 17:47:18,065 INFO L349 Elim1Store]: treesize reduction 220, result has 21.7 percent of original size [2023-12-02 17:47:18,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 29 case distinctions, treesize of input 333 treesize of output 302 [2023-12-02 17:47:18,859 INFO L349 Elim1Store]: treesize reduction 264, result has 21.4 percent of original size [2023-12-02 17:47:18,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 387 treesize of output 340 [2023-12-02 17:47:21,793 INFO L349 Elim1Store]: treesize reduction 512, result has 22.1 percent of original size [2023-12-02 17:47:21,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 41 disjoint index pairs (out of 105 index pairs), introduced 16 new quantified variables, introduced 54 case distinctions, treesize of input 468 treesize of output 461 [2023-12-02 17:47:33,459 INFO L349 Elim1Store]: treesize reduction 800, result has 17.9 percent of original size [2023-12-02 17:47:33,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 42 disjoint index pairs (out of 136 index pairs), introduced 18 new quantified variables, introduced 86 case distinctions, treesize of input 517 treesize of output 532 [2023-12-02 17:51:10,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2023-12-02 17:51:10,921 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-02 17:51:10,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:51:10,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022669002] [2023-12-02 17:51:10,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:51:10,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820893434] [2023-12-02 17:51:10,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2023-12-02 17:51:10,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390308739] [2023-12-02 17:51:10,925 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-12-02 17:51:10,925 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:51:10,926 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 17:51:10,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:51:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2023-12-02 17:51:10,926 ERROR L171 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2023-12-02 17:51:10,926 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-12-02 17:51:10,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:51:10,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:51:11,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:51:11,142 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-12-02 17:51:11,144 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:51:11,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:51:11 BoogieIcfgContainer [2023-12-02 17:51:11,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:51:11,162 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:51:11,162 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:51:11,162 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:51:11,162 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:40:22" (3/4) ... [2023-12-02 17:51:11,164 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:51:11,165 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:51:11,166 INFO L158 Benchmark]: Toolchain (without parser) took 649082.21ms. Allocated memory was 144.7MB in the beginning and 717.2MB in the end (delta: 572.5MB). Free memory was 105.0MB in the beginning and 668.8MB in the end (delta: -563.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2023-12-02 17:51:11,166 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 144.7MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:51:11,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.59ms. Allocated memory is still 144.7MB. Free memory was 105.0MB in the beginning and 93.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:51:11,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.85ms. Allocated memory is still 144.7MB. Free memory was 93.8MB in the beginning and 91.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:51:11,167 INFO L158 Benchmark]: Boogie Preprocessor took 25.92ms. Allocated memory is still 144.7MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:51:11,167 INFO L158 Benchmark]: RCFGBuilder took 415.69ms. Allocated memory is still 144.7MB. Free memory was 90.3MB in the beginning and 71.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 17:51:11,167 INFO L158 Benchmark]: TraceAbstraction took 648387.54ms. Allocated memory was 144.7MB in the beginning and 717.2MB in the end (delta: 572.5MB). Free memory was 70.7MB in the beginning and 669.8MB in the end (delta: -599.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:51:11,168 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 717.2MB. Free memory was 669.8MB in the beginning and 668.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:51:11,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 144.7MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.59ms. Allocated memory is still 144.7MB. Free memory was 105.0MB in the beginning and 93.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.85ms. Allocated memory is still 144.7MB. Free memory was 93.8MB in the beginning and 91.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.92ms. Allocated memory is still 144.7MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.69ms. Allocated memory is still 144.7MB. Free memory was 90.3MB in the beginning and 71.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 648387.54ms. Allocated memory was 144.7MB in the beginning and 717.2MB in the end (delta: 572.5MB). Free memory was 70.7MB in the beginning and 669.8MB in the end (delta: -599.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 717.2MB. Free memory was 669.8MB in the beginning and 668.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 40]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L85] int X; [L86] int Y; [L87] long long x; [L88] long long y; [L89] long long v; [L90] long long xy; [L91] long long yx; [L92] X = __VERIFIER_nondet_int() [L93] Y = __VERIFIER_nondet_int() [L94] EXPR \read(Y) [L94] EXPR \read(X) [L94] v = (((long long) 2) * Y) - X [L95] y = 0 [L96] x = 0 [L97] CALL func_to_recursive_line_0_to_41_0(&yx, &Y, &v, &y, &x, &X, &xy) [L55] EXPR \read(*Y) [L55] EXPR \read(*x) [L55] *yx = ((long long) (*Y)) * (*x) [L56] EXPR \read(*X) [L56] EXPR \read(*y) [L56] *xy = ((long long) (*X)) * (*y) [L57] EXPR \read(*yx) [L57] EXPR \read(*xy) [L57] EXPR \read(*X) [L57] EXPR \read(*Y) [L57] EXPR \read(*v) [L57] CALL __VERIFIER_assert((((((2 * (*yx)) - (2 * (*xy))) - (*X)) + (((long long) 2) * (*Y))) - (*v)) == 0) [L36] COND FALSE !(!cond) [L57] RET __VERIFIER_assert((((((2 * (*yx)) - (2 * (*xy))) - (*X)) + (((long long) 2) * (*Y))) - (*v)) == 0) [L58] EXPR \read(*x) [L58] EXPR \read(*X) [L58] COND FALSE !(!((*x) <= (*X))) [L65] EXPR \read(*v) [L65] COND TRUE (*v) < 0 [L67] EXPR \read(*v) [L67] EXPR \read(*Y) [L67] *v = (*v) + (((long long) 2) * (*Y)) [L74] EXPR \read(*x) [L74] (*x)++ [L76] CALL func_to_recursive_line_0_to_41_0(yx, Y, v, y, x, X, xy) [L55] EXPR \read(*Y) [L55] EXPR \read(*x) [L55] *yx = ((long long) (*Y)) * (*x) [L56] EXPR \read(*X) [L56] EXPR \read(*y) [L56] *xy = ((long long) (*X)) * (*y) [L57] EXPR \read(*yx) [L57] EXPR \read(*xy) [L57] EXPR \read(*X) [L57] EXPR \read(*Y) [L57] EXPR \read(*v) [L57] CALL __VERIFIER_assert((((((2 * (*yx)) - (2 * (*xy))) - (*X)) + (((long long) 2) * (*Y))) - (*v)) == 0) [L36] COND FALSE !(!cond) [L57] RET __VERIFIER_assert((((((2 * (*yx)) - (2 * (*xy))) - (*X)) + (((long long) 2) * (*Y))) - (*v)) == 0) [L58] EXPR \read(*x) [L58] EXPR \read(*X) [L58] COND FALSE !(!((*x) <= (*X))) [L65] EXPR \read(*v) [L65] COND TRUE (*v) < 0 [L67] EXPR \read(*v) [L67] EXPR \read(*Y) [L67] *v = (*v) + (((long long) 2) * (*Y)) [L74] EXPR \read(*x) [L74] (*x)++ [L76] CALL func_to_recursive_line_0_to_41_0(yx, Y, v, y, x, X, xy) [L55] EXPR \read(*Y) [L55] EXPR \read(*x) [L55] *yx = ((long long) (*Y)) * (*x) [L56] EXPR \read(*X) [L56] EXPR \read(*y) [L56] *xy = ((long long) (*X)) * (*y) [L57] EXPR \read(*yx) [L57] EXPR \read(*xy) [L57] EXPR \read(*X) [L57] EXPR \read(*Y) [L57] EXPR \read(*v) [L57] CALL __VERIFIER_assert((((((2 * (*yx)) - (2 * (*xy))) - (*X)) + (((long long) 2) * (*Y))) - (*v)) == 0) [L36] COND TRUE !cond [L40] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 648.3s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 22.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 20.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 97 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 329 IncrementalHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 38 mSDtfsCounter, 329 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 178.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 471.8s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 16 QuantifiedInterpolants, 3199 SizeOfPredicates, 118 NumberOfNonLiveVariables, 1132 ConjunctsInSsa, 704 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/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_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:51:12,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:51:12,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:51:12,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:51:12,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:51:12,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:51:12,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:51:12,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:51:12,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:51:12,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:51:12,977 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:51:12,977 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:51:12,978 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:51:12,978 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:51:12,979 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:51:12,979 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:51:12,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:51:12,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:51:12,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:51:12,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:51:12,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:51:12,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:51:12,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:51:12,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:51:12,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:51:12,985 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:51:12,986 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:51:12,986 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:51:12,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:51:12,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:51:12,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:51:12,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:51:12,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:51:12,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:51:12,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:51:12,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:51:12,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:51:12,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:51:12,990 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:51:12,990 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:51:12,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:51:12,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:51:12,991 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:51:12,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:51:12,991 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 [2023-12-02 17:51:13,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:51:13,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:51:13,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:51:13,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:51:13,328 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:51:13,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2023-12-02 17:51:16,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:51:16,244 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:51:16,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2023-12-02 17:51:16,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data/89d7240bf/dd32e1f358ce4930a64ba6a78f79ff05/FLAG82c2cf892 [2023-12-02 17:51:16,263 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/data/89d7240bf/dd32e1f358ce4930a64ba6a78f79ff05 [2023-12-02 17:51:16,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:51:16,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:51:16,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:51:16,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:51:16,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:51:16,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16, skipping insertion in model container [2023-12-02 17:51:16,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:51:16,453 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c[1137,1150] [2023-12-02 17:51:16,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:51:16,493 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:51:16,507 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c[1137,1150] [2023-12-02 17:51:16,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:51:16,540 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:51:16,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16 WrapperNode [2023-12-02 17:51:16,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:51:16,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:51:16,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:51:16,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:51:16,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,581 INFO L138 Inliner]: procedures = 20, calls = 76, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2023-12-02 17:51:16,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:51:16,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:51:16,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:51:16,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:51:16,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:51:16,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:51:16,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:51:16,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:51:16,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (1/1) ... [2023-12-02 17:51:16,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:51:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:51:16,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:51:16,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:51:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:51:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:51:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:51:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-12-02 17:51:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:51:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:51:16,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:51:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-12-02 17:51:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_41_0 [2023-12-02 17:51:16,685 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_41_0 [2023-12-02 17:51:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:51:16,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:51:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:51:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:51:16,779 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:51:16,781 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:51:17,890 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:51:17,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:51:17,925 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:51:17,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:51:17 BoogieIcfgContainer [2023-12-02 17:51:17,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:51:17,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:51:17,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:51:17,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:51:17,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:51:16" (1/3) ... [2023-12-02 17:51:17,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f20681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:51:17, skipping insertion in model container [2023-12-02 17:51:17,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:51:16" (2/3) ... [2023-12-02 17:51:17,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f20681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:51:17, skipping insertion in model container [2023-12-02 17:51:17,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:51:17" (3/3) ... [2023-12-02 17:51:17,943 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bresenham-ll.c [2023-12-02 17:51:17,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:51:17,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:51:18,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:51:18,015 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;@4c58c18d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:51:18,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:51:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:51:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:51:18,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:51:18,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:51:18,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:51:18,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:51:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash 984208655, now seen corresponding path program 1 times [2023-12-02 17:51:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:51:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592013526] [2023-12-02 17:51:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:51:18,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:51:18,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:51:18,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 17:51:18,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 17:51:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:51:19,377 WARN L260 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-02 17:51:19,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:51:19,575 INFO L349 Elim1Store]: treesize reduction 150, result has 0.7 percent of original size [2023-12-02 17:51:19,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 103 [2023-12-02 17:51:19,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:19,954 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:51:19,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 502 treesize of output 79 [2023-12-02 17:51:23,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:23,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 84 [2023-12-02 17:51:23,913 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 17:51:23,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:51:23,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:51:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592013526] [2023-12-02 17:51:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592013526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:51:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:51:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:51:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107200924] [2023-12-02 17:51:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:51:23,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:51:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:51:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:51:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:51:23,940 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:51:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:51:32,497 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2023-12-02 17:51:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:51:32,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 17:51:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:51:32,506 INFO L225 Difference]: With dead ends: 54 [2023-12-02 17:51:32,506 INFO L226 Difference]: Without dead ends: 32 [2023-12-02 17:51:32,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:51:32,510 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:51:32,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 82 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-02 17:51:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-02 17:51:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-02 17:51:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 17:51:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-12-02 17:51:32,540 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 8 [2023-12-02 17:51:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:51:32,541 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-12-02 17:51:32,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:51:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-12-02 17:51:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:51:32,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:51:32,542 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:51:32,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:51:32,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:51:32,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:51:32,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:51:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1264213224, now seen corresponding path program 1 times [2023-12-02 17:51:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:51:32,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394058193] [2023-12-02 17:51:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:51:32,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:51:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:51:32,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 17:51:32,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ea2c0-48d2-45de-90ea-9bd34cae7794/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 17:51:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:51:37,223 WARN L260 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-02 17:51:37,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:51:37,285 INFO L349 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2023-12-02 17:51:37,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 910 treesize of output 890 [2023-12-02 17:51:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:51:40,188 INFO L190 IndexEqualityManager]: detected not equals via solver