./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire --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 87db985859a6b034137d18f88e4077536120341f1ad0cccc5267e9ee4379ce7a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:35,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:36,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:14:36,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:36,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:36,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:36,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:36,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:36,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:36,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:36,160 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:36,161 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:36,161 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:36,163 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:36,163 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:36,164 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:36,164 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:36,165 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:36,165 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:36,166 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:36,166 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:36,167 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:36,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:36,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:36,169 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:36,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:36,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:36,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:36,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:36,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:36,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:36,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:36,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:36,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:36,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:36,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:36,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:36,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:36,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:36,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:36,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:36,190 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:36,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:36,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:36,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:36,191 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:36,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:36,192 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_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87db985859a6b034137d18f88e4077536120341f1ad0cccc5267e9ee4379ce7a [2023-11-23 21:14:36,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:36,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:36,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:36,598 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:36,598 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:36,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c [2023-11-23 21:14:39,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:40,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:40,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c [2023-11-23 21:14:40,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/data/6d6370f6f/367a2d509415483894297fabbc24fda6/FLAGac2c1661f [2023-11-23 21:14:40,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/data/6d6370f6f/367a2d509415483894297fabbc24fda6 [2023-11-23 21:14:40,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:40,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:40,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:40,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:40,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:40,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b824dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40, skipping insertion in model container [2023-11-23 21:14:40,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,160 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:40,355 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_c2fb2b90-44c7-4920-b731-749b4de911bf/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c[537,550] [2023-11-23 21:14:40,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:40,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:40,400 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_c2fb2b90-44c7-4920-b731-749b4de911bf/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c[537,550] [2023-11-23 21:14:40,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:40,422 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:40,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40 WrapperNode [2023-11-23 21:14:40,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:40,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:40,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:40,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:40,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,459 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-11-23 21:14:40,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:40,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:40,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:40,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:40,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:40,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:40,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:40,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:40,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (1/1) ... [2023-11-23 21:14:40,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:40,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:40,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:40,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:14:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:14:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:14:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:14:40,610 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:40,612 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:40,830 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:40,878 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:40,878 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:14:40,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:40 BoogieIcfgContainer [2023-11-23 21:14:40,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:40,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:40,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:40,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:40,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:40" (1/3) ... [2023-11-23 21:14:40,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b712742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:40, skipping insertion in model container [2023-11-23 21:14:40,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:40" (2/3) ... [2023-11-23 21:14:40,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b712742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:40, skipping insertion in model container [2023-11-23 21:14:40,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:40" (3/3) ... [2023-11-23 21:14:40,890 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound1.c [2023-11-23 21:14:40,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:40,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:40,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:40,967 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;@59c0c220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:40,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:40,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:14:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:14:40,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:40,981 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:40,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:40,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash 263857554, now seen corresponding path program 1 times [2023-11-23 21:14:40,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:40,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548049027] [2023-11-23 21:14:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:40,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:41,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548049027] [2023-11-23 21:14:41,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:14:41,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923620609] [2023-11-23 21:14:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:41,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:41,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:41,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:41,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:14:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:41,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:14:41,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:14:41,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923620609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:41,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:41,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:14:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240076881] [2023-11-23 21:14:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:14:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:14:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:14:41,498 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 21:14:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:41,548 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2023-11-23 21:14:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:14:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 19 [2023-11-23 21:14:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:41,559 INFO L225 Difference]: With dead ends: 34 [2023-11-23 21:14:41,560 INFO L226 Difference]: Without dead ends: 19 [2023-11-23 21:14:41,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:14:41,567 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:41,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:14:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-23 21:14:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-23 21:14:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:14:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-11-23 21:14:41,609 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 19 [2023-11-23 21:14:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:41,611 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-11-23 21:14:41,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 21:14:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-11-23 21:14:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:14:41,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:41,613 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:41,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:41,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:14:41,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:41,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:41,835 INFO L85 PathProgramCache]: Analyzing trace with hash -999917202, now seen corresponding path program 1 times [2023-11-23 21:14:41,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:41,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965111368] [2023-11-23 21:14:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:41,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:41,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:41,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632335345] [2023-11-23 21:14:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:41,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:41,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:41,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:14:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:42,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:14:42,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:14:42,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:42,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:42,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965111368] [2023-11-23 21:14:42,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:14:42,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632335345] [2023-11-23 21:14:42,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632335345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:42,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:42,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:14:42,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573667781] [2023-11-23 21:14:42,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:42,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:14:42,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:14:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:14:42,194 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 21:14:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:42,345 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2023-11-23 21:14:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:14:42,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2023-11-23 21:14:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:42,348 INFO L225 Difference]: With dead ends: 30 [2023-11-23 21:14:42,348 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 21:14:42,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:14:42,351 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:42,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 66 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:14:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 21:14:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-23 21:14:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:14:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-23 21:14:42,370 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 20 [2023-11-23 21:14:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:42,372 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-23 21:14:42,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 21:14:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-23 21:14:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:14:42,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:42,376 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:42,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:42,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:42,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:42,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:42,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1224321740, now seen corresponding path program 1 times [2023-11-23 21:14:42,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:42,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904225345] [2023-11-23 21:14:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:42,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:42,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:42,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808984787] [2023-11-23 21:14:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:42,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:42,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:42,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:42,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:14:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:42,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:14:42,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:14:42,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:14:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:14:42,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904225345] [2023-11-23 21:14:42,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:14:42,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808984787] [2023-11-23 21:14:42,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808984787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:14:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53324994] [2023-11-23 21:14:42,884 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-23 21:14:42,885 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:14:42,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:14:42,914 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:14:42,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:14:44,764 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 73 for LOIs [2023-11-23 21:14:44,838 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-23 21:14:44,841 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:14:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [53324994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:14:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 5] total 17 [2023-11-23 21:14:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810682347] [2023-11-23 21:14:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:46,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:14:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:14:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:14:46,272 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:14:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:48,094 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-11-23 21:14:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:14:48,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 28 [2023-11-23 21:14:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:48,097 INFO L225 Difference]: With dead ends: 34 [2023-11-23 21:14:48,097 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 21:14:48,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:14:48,099 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:48,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 21:14:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 21:14:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2023-11-23 21:14:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:14:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-23 21:14:48,113 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 28 [2023-11-23 21:14:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:48,114 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-23 21:14:48,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:14:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-23 21:14:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:14:48,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:48,116 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:48,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 21:14:48,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:48,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1222534280, now seen corresponding path program 1 times [2023-11-23 21:14:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511605507] [2023-11-23 21:14:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:48,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:48,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639851496] [2023-11-23 21:14:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:48,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:48,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:48,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:14:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:49,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 21:14:49,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:15:04,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:15:08,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511605507] [2023-11-23 21:15:08,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:15:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639851496] [2023-11-23 21:15:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639851496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1676688727] [2023-11-23 21:15:08,573 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-23 21:15:08,574 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:08,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:08,575 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:08,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:15:09,674 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2023-11-23 21:15:09,684 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-23 21:15:09,686 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:16,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '741#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-11-23 21:15:16,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:16,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:15:16,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 13 [2023-11-23 21:15:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913321338] [2023-11-23 21:15:16,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:16,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:15:16,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:15:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=647, Unknown=1, NotChecked=0, Total=756 [2023-11-23 21:15:16,272 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 21:15:18,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-23 21:15:19,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-23 21:15:20,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-23 21:15:21,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-23 21:15:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:23,564 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-11-23 21:15:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:15:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 28 [2023-11-23 21:15:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:23,566 INFO L225 Difference]: With dead ends: 30 [2023-11-23 21:15:23,566 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:15:23,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=123, Invalid=746, Unknown=1, NotChecked=0, Total=870 [2023-11-23 21:15:23,568 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:23,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 83 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-23 21:15:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:15:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:15:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:15:23,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-11-23 21:15:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:23,571 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:15:23,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 21:15:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:15:23,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:15:23,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:15:23,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:23,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:15:31,634 WARN L293 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 102 DAG size of output: 30 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-23 21:15:34,467 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:15:34,467 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-23 21:15:34,467 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (select .cse1 1) 0))) [2023-11-23 21:15:34,468 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (select .cse1 1) 0))) [2023-11-23 21:15:34,468 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:15:34,468 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 36 49) the Hoare annotation is: (and (= (* (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 2147483648) 2) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (<= 1 |#StackHeapBarrier|) (<= ~counter~0 1) (<= 0 ~counter~0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 65535)) [2023-11-23 21:15:34,468 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 36 49) no Hoare annotation was computed. [2023-11-23 21:15:34,468 INFO L895 garLoopResultBuilder]: At program point L36-3(lines 36 49) the Hoare annotation is: (or (and (= (* (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 2147483648) 2) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 65535)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))) [2023-11-23 21:15:34,469 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 .cse1) (= ~counter~0 0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (<= .cse1 65535) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) (= (select .cse2 1) 0))) [2023-11-23 21:15:34,469 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= ~counter~0 0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (select .cse1 1) 0))) [2023-11-23 21:15:34,469 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2023-11-23 21:15:34,470 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse2 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse3 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (= (select .cse0 3) 50) (<= 1 |#StackHeapBarrier|) (<= .cse1 65535) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (select .cse0 5) 99) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 .cse2) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (<= .cse2 65535) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse3 0) 48) (= ~counter~0 1) (= (select .cse3 1) 0))) [2023-11-23 21:15:34,470 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 36 49) no Hoare annotation was computed. [2023-11-23 21:15:34,470 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-11-23 21:15:34,470 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-11-23 21:15:34,471 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-11-23 21:15:34,471 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-11-23 21:15:34,471 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-11-23 21:15:34,471 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-11-23 21:15:34,471 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-11-23 21:15:34,472 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-11-23 21:15:34,475 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-23 21:15:34,478 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:34,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:34 BoogieIcfgContainer [2023-11-23 21:15:34,493 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:34,493 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:34,493 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:34,494 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:34,494 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:40" (3/4) ... [2023-11-23 21:15:34,497 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:15:34,501 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-23 21:15:34,501 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-23 21:15:34,505 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-23 21:15:34,506 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-23 21:15:34,506 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:15:34,506 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:15:34,507 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:15:34,612 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:15:34,613 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:15:34,613 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:34,614 INFO L158 Benchmark]: Toolchain (without parser) took 54500.17ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 134.2MB in the beginning and 53.9MB in the end (delta: 80.3MB). Peak memory consumption was 113.8MB. Max. memory is 16.1GB. [2023-11-23 21:15:34,615 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:34,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.91ms. Allocated memory is still 163.6MB. Free memory was 134.2MB in the beginning and 123.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:15:34,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.92ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 121.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:34,616 INFO L158 Benchmark]: Boogie Preprocessor took 23.68ms. Allocated memory is still 163.6MB. Free memory was 121.8MB in the beginning and 121.1MB in the end (delta: 769.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:34,617 INFO L158 Benchmark]: RCFGBuilder took 395.82ms. Allocated memory is still 163.6MB. Free memory was 120.5MB in the beginning and 126.7MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:15:34,618 INFO L158 Benchmark]: TraceAbstraction took 53609.66ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 125.9MB in the beginning and 58.1MB in the end (delta: 67.8MB). Peak memory consumption was 104.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:34,620 INFO L158 Benchmark]: Witness Printer took 120.09ms. Allocated memory is still 197.1MB. Free memory was 58.1MB in the beginning and 53.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:34,623 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.91ms. Allocated memory is still 163.6MB. Free memory was 134.2MB in the beginning and 123.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.92ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 121.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.68ms. Allocated memory is still 163.6MB. Free memory was 121.8MB in the beginning and 121.1MB in the end (delta: 769.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 395.82ms. Allocated memory is still 163.6MB. Free memory was 120.5MB in the beginning and 126.7MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 53609.66ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 125.9MB in the beginning and 58.1MB in the end (delta: 67.8MB). Peak memory consumption was 104.1MB. Max. memory is 16.1GB. * Witness Printer took 120.09ms. Allocated memory is still 197.1MB. Free memory was 58.1MB in the beginning and 53.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.5s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 203 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 275 IncrementalHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 62 mSDtfsCounter, 275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 20 PreInvPairs, 30 NumberOfFragments, 668 HoareAnnotationTreeSize, 20 FomulaSimplifications, 432 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1701 FormulaSimplificationTreeSizeReductionInter, 10.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 647 SizeOfPredicates, 6 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 82/90 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: OVERALL_TIME: 2.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 23, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 19, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 15, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME: 0.4s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 44, TOOLS_QUANTIFIERELIM_TIME: 1.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 59, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 20, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 23, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 10, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 287, DAG_COMPRESSION_RETAINED_NODES: 65, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((a * b) % 2147483648) * 2) == (((v * y) + (u * x)) % 4294967296)) && (counter <= 1)) && (0 <= counter)) && (1 <= (b % 4294967296))) && ((a % 4294967296) <= 65535)) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:15:34,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fb2b90-44c7-4920-b731-749b4de911bf/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE