./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/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_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21f79dea7aad8546a3e0176902289dccc4338c9a5ec0cb74e31e8a84f408fa52 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:19:48,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:19:48,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:19:48,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:19:48,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:19:49,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:19:49,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:19:49,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:19:49,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:19:49,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:19:49,005 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:19:49,005 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:19:49,006 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:19:49,006 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:19:49,007 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:19:49,007 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:19:49,008 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:19:49,008 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:19:49,008 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:19:49,009 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:19:49,009 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:19:49,010 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:19:49,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:19:49,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:19:49,021 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:19:49,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:19:49,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:19:49,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:19:49,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:19:49,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:19:49,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:19:49,023 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:19:49,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:19:49,024 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:19:49,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:19:49,025 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:19:49,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:19:49,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:19:49,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:19:49,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:19:49,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:19:49,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:19:49,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:19:49,028 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:19:49,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:19:49,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:19:49,029 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:19:49,029 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:19:49,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:19:49,029 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_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21f79dea7aad8546a3e0176902289dccc4338c9a5ec0cb74e31e8a84f408fa52 [2023-12-02 15:19:49,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:19:49,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:19:49,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:19:49,268 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:19:49,269 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:19:49,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound20.c [2023-12-02 15:19:52,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:19:52,166 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:19:52,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound20.c [2023-12-02 15:19:52,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/data/78553729a/4a76ef1cf96e4c8b983201762d6bbfff/FLAG0d4234557 [2023-12-02 15:19:52,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/data/78553729a/4a76ef1cf96e4c8b983201762d6bbfff [2023-12-02 15:19:52,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:19:52,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:19:52,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:19:52,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:19:52,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:19:52,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1f9eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52, skipping insertion in model container [2023-12-02 15:19:52,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:19:52,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:19:52,359 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:19:52,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:19:52,390 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:19:52,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52 WrapperNode [2023-12-02 15:19:52,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:19:52,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:19:52,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:19:52,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:19:52,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,422 INFO L138 Inliner]: procedures = 14, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-12-02 15:19:52,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:19:52,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:19:52,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:19:52,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:19:52,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:19:52,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:19:52,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:19:52,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:19:52,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (1/1) ... [2023-12-02 15:19:52,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:19:52,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:19:52,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:19:52,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:19:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:19:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:19:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:19:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:19:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:19:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:19:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:19:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:19:52,574 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:19:52,576 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:19:52,700 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:19:52,736 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:19:52,737 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:19:52,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:19:52 BoogieIcfgContainer [2023-12-02 15:19:52,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:19:52,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:19:52,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:19:52,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:19:52,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:19:52" (1/3) ... [2023-12-02 15:19:52,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34796088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:19:52, skipping insertion in model container [2023-12-02 15:19:52,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:19:52" (2/3) ... [2023-12-02 15:19:52,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34796088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:19:52, skipping insertion in model container [2023-12-02 15:19:52,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:19:52" (3/3) ... [2023-12-02 15:19:52,747 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound20.c [2023-12-02 15:19:52,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:19:52,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:19:52,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:19:52,826 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;@68d02316, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:19:52,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:19:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 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) [2023-12-02 15:19:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:19:52,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:19:52,838 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:19:52,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 15:19:52,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:19:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1731831638, now seen corresponding path program 1 times [2023-12-02 15:19:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:19:52,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259284035] [2023-12-02 15:19:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:19:52,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:19:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:19:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:19:53,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:19:53,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259284035] [2023-12-02 15:19:53,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259284035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:19:53,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:19:53,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:19:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565494233] [2023-12-02 15:19:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:19:53,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:19:53,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:19:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:19:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:19:53,132 INFO L87 Difference]: Start difference. First operand has 21 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:19:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:19:53,203 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2023-12-02 15:19:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:19:53,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-12-02 15:19:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:19:53,211 INFO L225 Difference]: With dead ends: 32 [2023-12-02 15:19:53,211 INFO L226 Difference]: Without dead ends: 22 [2023-12-02 15:19:53,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:19:53,216 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:19:53,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 40 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:19:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-02 15:19:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-12-02 15:19:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:19:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-12-02 15:19:53,249 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2023-12-02 15:19:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:19:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-12-02 15:19:53,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:19:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-12-02 15:19:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 15:19:53,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:19:53,252 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:19:53,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:19:53,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 15:19:53,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:19:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1994670231, now seen corresponding path program 1 times [2023-12-02 15:19:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:19:53,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009975833] [2023-12-02 15:19:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:19:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:19:53,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:19:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009843595] [2023-12-02 15:19:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:19:53,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:19:53,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:19:53,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:19:53,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:19:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:19:53,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:19:53,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:19:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:19:53,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:19:53,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:19:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009975833] [2023-12-02 15:19:53,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:19:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009843595] [2023-12-02 15:19:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009843595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:19:53,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:19:53,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:19:53,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730469658] [2023-12-02 15:19:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:19:53,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:19:53,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:19:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:19:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:19:53,458 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:19:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:19:53,531 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-12-02 15:19:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:19:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-12-02 15:19:53,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:19:53,533 INFO L225 Difference]: With dead ends: 22 [2023-12-02 15:19:53,533 INFO L226 Difference]: Without dead ends: 21 [2023-12-02 15:19:53,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:19:53,535 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:19:53,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:19:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-02 15:19:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-12-02 15:19:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:19:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-12-02 15:19:53,543 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 24 [2023-12-02 15:19:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:19:53,543 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-12-02 15:19:53,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:19:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-02 15:19:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 15:19:53,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:19:53,545 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] [2023-12-02 15:19:53,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:19:53,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:19:53,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 15:19:53,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:19:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1705235063, now seen corresponding path program 1 times [2023-12-02 15:19:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:19:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748196460] [2023-12-02 15:19:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:19:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:19:53,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:19:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561137067] [2023-12-02 15:19:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:19:53,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:19:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:19:53,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:19:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:19:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:19:53,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:19:53,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:19:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:19:54,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:19:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:19:54,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:19:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748196460] [2023-12-02 15:19:54,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:19:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561137067] [2023-12-02 15:19:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561137067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:19:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928130908] [2023-12-02 15:19:54,114 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-12-02 15:19:54,114 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:19:54,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:19:54,122 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:19:54,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:19:55,744 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 15:19:55,756 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:19:55,758 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:19:59,356 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '399#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|))' at error location [2023-12-02 15:19:59,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:19:59,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:19:59,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-12-02 15:19:59,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491885293] [2023-12-02 15:19:59,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:19:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:19:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:19:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:19:59,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:19:59,360 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 15:19:59,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:19:59,701 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-12-02 15:19:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 15:19:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 25 [2023-12-02 15:19:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:19:59,703 INFO L225 Difference]: With dead ends: 45 [2023-12-02 15:19:59,703 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 15:19:59,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2023-12-02 15:19:59,705 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:19:59,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:19:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 15:19:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 15:19:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:19:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-12-02 15:19:59,714 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 25 [2023-12-02 15:19:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:19:59,715 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-12-02 15:19:59,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 15:19:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-12-02 15:19:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 15:19:59,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:19:59,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:19:59,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:19:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:19:59,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 15:19:59,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:19:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1313757932, now seen corresponding path program 2 times [2023-12-02 15:19:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:19:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525590725] [2023-12-02 15:19:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:19:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:19:59,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:19:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562989439] [2023-12-02 15:19:59,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:19:59,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:19:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:19:59,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:19:59,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:19:59,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:19:59,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:19:59,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:20:00,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:20:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 15:20:00,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:20:00,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:20:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525590725] [2023-12-02 15:20:00,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:20:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562989439] [2023-12-02 15:20:00,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562989439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:20:00,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:20:00,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:20:00,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398403451] [2023-12-02 15:20:00,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:20:00,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:20:00,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:20:00,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:20:00,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:20:00,032 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 15:20:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:20:00,333 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2023-12-02 15:20:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:20:00,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-12-02 15:20:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:20:00,334 INFO L225 Difference]: With dead ends: 44 [2023-12-02 15:20:00,335 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:20:00,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:20:00,336 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:20:00,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 23 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:20:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:20:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:20:00,338 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) [2023-12-02 15:20:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:20:00,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2023-12-02 15:20:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:20:00,339 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:20:00,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 15:20:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:20:00,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:20:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 15:20:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 15:20:00,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:20:00,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:20:00,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:20:00,587 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-12-02 15:20:00,587 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:20:00,588 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-02 15:20:00,588 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (= ~counter~0 0) [2023-12-02 15:20:00,588 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (= ~counter~0 0) [2023-12-02 15:20:00,588 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:20:00,588 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 36 49) the Hoare annotation is: (or (and (<= 1 ~counter~0) (<= ~counter~0 20)) (= ~counter~0 0)) [2023-12-02 15:20:00,588 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-12-02 15:20:00,589 INFO L899 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed. [2023-12-02 15:20:00,589 INFO L899 garLoopResultBuilder]: For program point L36-3(lines 36 49) no Hoare annotation was computed. [2023-12-02 15:20:00,589 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-12-02 15:20:00,589 INFO L902 garLoopResultBuilder]: At program point L36-5(lines 36 49) the Hoare annotation is: true [2023-12-02 15:20:00,589 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (= ~counter~0 0) [2023-12-02 15:20:00,589 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (= ~counter~0 0) [2023-12-02 15:20:00,590 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2023-12-02 15:20:00,590 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 20)) [2023-12-02 15:20:00,590 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 36 49) no Hoare annotation was computed. [2023-12-02 15:20:00,590 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-12-02 15:20:00,590 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-12-02 15:20:00,590 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-12-02 15:20:00,591 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-12-02 15:20:00,594 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-12-02 15:20:00,596 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:20:00,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:20:00 BoogieIcfgContainer [2023-12-02 15:20:00,604 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:20:00,605 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:20:00,605 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:20:00,605 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:20:00,605 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:19:52" (3/4) ... [2023-12-02 15:20:00,607 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:20:00,609 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-12-02 15:20:00,609 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-02 15:20:00,613 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-12-02 15:20:00,613 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 15:20:00,614 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 15:20:00,614 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:20:00,614 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:20:00,683 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:20:00,684 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:20:00,684 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:20:00,685 INFO L158 Benchmark]: Toolchain (without parser) took 8493.17ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 133.5MB in the beginning and 126.7MB in the end (delta: 6.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-12-02 15:20:00,685 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:20:00,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.01ms. Allocated memory is still 163.6MB. Free memory was 133.5MB in the beginning and 123.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:20:00,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.77ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 121.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:20:00,686 INFO L158 Benchmark]: Boogie Preprocessor took 20.00ms. Allocated memory is still 163.6MB. Free memory was 121.0MB in the beginning and 120.4MB in the end (delta: 668.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:20:00,687 INFO L158 Benchmark]: RCFGBuilder took 294.50ms. Allocated memory is still 163.6MB. Free memory was 120.4MB in the beginning and 106.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:20:00,687 INFO L158 Benchmark]: TraceAbstraction took 7863.44ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 105.7MB in the beginning and 131.9MB in the end (delta: -26.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-12-02 15:20:00,688 INFO L158 Benchmark]: Witness Printer took 79.16ms. Allocated memory is still 197.1MB. Free memory was 131.9MB in the beginning and 126.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:20:00,690 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 121.6MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.01ms. Allocated memory is still 163.6MB. Free memory was 133.5MB in the beginning and 123.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.77ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 121.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.00ms. Allocated memory is still 163.6MB. Free memory was 121.0MB in the beginning and 120.4MB in the end (delta: 668.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 294.50ms. Allocated memory is still 163.6MB. Free memory was 120.4MB in the beginning and 106.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7863.44ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 105.7MB in the beginning and 131.9MB in the end (delta: -26.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Witness Printer took 79.16ms. Allocated memory is still 197.1MB. Free memory was 131.9MB in the beginning and 126.7MB in the end (delta: 5.2MB). 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: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 51 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 25 NumberOfFragments, 33 HoareAnnotationTreeSize, 17 FomulaSimplifications, 157 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 114 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 7 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 122/128 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((1 <= counter) && (counter <= 20)) || (counter == 0)) RESULT: Ultimate proved your program to be correct! [2023-12-02 15:20:00,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a98f2e6-6c7b-492e-91a9-c57d8cf04de0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE