./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5 --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 298a2fa3454ac9d826b4a2fcda5c49527e83e26e7b8633f156b47d33577c1902 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:59:02,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:59:02,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 18:59:02,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:59:02,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:59:02,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:59:02,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:59:02,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:59:02,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:59:03,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:59:03,001 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:59:03,001 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:59:03,002 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:59:03,003 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:59:03,003 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:59:03,004 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:59:03,005 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:59:03,005 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:59:03,006 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:59:03,007 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:59:03,008 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:59:03,008 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:59:03,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:59:03,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:59:03,011 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:59:03,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:59:03,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:59:03,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:59:03,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:59:03,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:59:03,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:59:03,014 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:59:03,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:59:03,038 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:59:03,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:59:03,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:59:03,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:59:03,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:59:03,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:59:03,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:59:03,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:59:03,040 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:59:03,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:59:03,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:59:03,041 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:59:03,041 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:59:03,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:59:03,042 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_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 298a2fa3454ac9d826b4a2fcda5c49527e83e26e7b8633f156b47d33577c1902 [2023-11-21 18:59:03,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:59:03,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:59:03,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:59:03,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:59:03,411 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:59:03,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c [2023-11-21 18:59:06,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:59:06,715 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:59:06,716 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c [2023-11-21 18:59:06,724 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/data/ad3ddf359/2db3df0e0341400d9a67e4ffd2347195/FLAG3c8c1c7b9 [2023-11-21 18:59:06,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/data/ad3ddf359/2db3df0e0341400d9a67e4ffd2347195 [2023-11-21 18:59:06,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:59:06,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:59:06,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:59:06,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:59:06,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:59:06,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:59:06" (1/1) ... [2023-11-21 18:59:06,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58843fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:06, skipping insertion in model container [2023-11-21 18:59:06,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:59:06" (1/1) ... [2023-11-21 18:59:06,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:59:06,937 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_40e37409-1f1d-4ab8-8d33-c75969ef5a23/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c[537,550] [2023-11-21 18:59:06,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:59:06,965 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:59:06,979 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_40e37409-1f1d-4ab8-8d33-c75969ef5a23/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c[537,550] [2023-11-21 18:59:06,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:59:07,002 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:59:07,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07 WrapperNode [2023-11-21 18:59:07,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:59:07,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:59:07,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:59:07,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:59:07,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,038 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-11-21 18:59:07,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:59:07,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:59:07,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:59:07,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:59:07,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:59:07,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:59:07,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:59:07,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:59:07,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (1/1) ... [2023-11-21 18:59:07,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:59:07,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:59:07,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:59:07,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:59:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:59:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 18:59:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 18:59:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:59:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:59:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:59:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 18:59:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 18:59:07,214 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:59:07,217 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:59:07,429 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:59:07,492 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:59:07,493 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 18:59:07,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:59:07 BoogieIcfgContainer [2023-11-21 18:59:07,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:59:07,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:59:07,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:59:07,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:59:07,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:59:06" (1/3) ... [2023-11-21 18:59:07,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37542e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:59:07, skipping insertion in model container [2023-11-21 18:59:07,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:59:07" (2/3) ... [2023-11-21 18:59:07,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37542e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:59:07, skipping insertion in model container [2023-11-21 18:59:07,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:59:07" (3/3) ... [2023-11-21 18:59:07,519 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound2.c [2023-11-21 18:59:07,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:59:07,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:59:07,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:59:07,647 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;@6da5f094, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:59:07,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 18:59:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 18:59:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 18:59:07,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:59:07,664 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:59:07,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:59:07,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:59:07,673 INFO L85 PathProgramCache]: Analyzing trace with hash 727522484, now seen corresponding path program 1 times [2023-11-21 18:59:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:59:07,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087386898] [2023-11-21 18:59:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:59:07,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:59:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:59:07,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:59:07,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087386898] [2023-11-21 18:59:07,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-21 18:59:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572589591] [2023-11-21 18:59:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:59:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:59:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:59:07,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 18:59:07,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 18:59:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:59:07,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:59:07,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:59:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-21 18:59:08,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:59:08,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572589591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:59:08,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:59:08,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:59:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702502148] [2023-11-21 18:59:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:59:08,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 18:59:08,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:59:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 18:59:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:59:08,059 INFO L87 Difference]: Start difference. First operand has 23 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 18:59:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:59:08,091 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2023-11-21 18:59:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:59:08,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2023-11-21 18:59:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:59:08,102 INFO L225 Difference]: With dead ends: 35 [2023-11-21 18:59:08,102 INFO L226 Difference]: Without dead ends: 21 [2023-11-21 18:59:08,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:59:08,109 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2023-11-21 18:59:08,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 18:59:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-21 18:59:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-21 18:59:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 18:59:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-21 18:59:08,146 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 26 [2023-11-21 18:59:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:59:08,148 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-21 18:59:08,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 18:59:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-21 18:59:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 18:59:08,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:59:08,151 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:59:08,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 18:59:08,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:59:08,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:59:08,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:59:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 671128121, now seen corresponding path program 1 times [2023-11-21 18:59:08,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:59:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859542657] [2023-11-21 18:59:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:59:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:59:08,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 18:59:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763941871] [2023-11-21 18:59:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:59:08,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:59:08,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:59:08,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 18:59:08,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 18:59:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:59:08,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-21 18:59:08,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:59:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-21 18:59:08,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:59:08,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:59:08,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859542657] [2023-11-21 18:59:08,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 18:59:08,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763941871] [2023-11-21 18:59:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763941871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:59:08,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:59:08,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 18:59:08,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79568494] [2023-11-21 18:59:08,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:59:08,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:59:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:59:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:59:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:59:08,738 INFO L87 Difference]: Start difference. First operand 21 states and 27 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 18:59:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:59:08,898 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2023-11-21 18:59:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:59:08,899 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2023-11-21 18:59:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:59:08,901 INFO L225 Difference]: With dead ends: 31 [2023-11-21 18:59:08,901 INFO L226 Difference]: Without dead ends: 28 [2023-11-21 18:59:08,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 18:59:08,904 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:59:08,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 77 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:59:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-21 18:59:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-21 18:59:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 18:59:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-11-21 18:59:08,915 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 26 [2023-11-21 18:59:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:59:08,916 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-11-21 18:59:08,916 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 18:59:08,916 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-11-21 18:59:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 18:59:08,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:59:08,918 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:59:08,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 18:59:09,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:59:09,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:59:09,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:59:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1013354018, now seen corresponding path program 1 times [2023-11-21 18:59:09,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:59:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533919194] [2023-11-21 18:59:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:59:09,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:59:09,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 18:59:09,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686143740] [2023-11-21 18:59:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:59:09,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:59:09,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:59:09,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 18:59:09,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 18:59:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:59:10,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-21 18:59:10,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:59:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 18:59:10,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 18:59:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-21 18:59:13,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:59:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533919194] [2023-11-21 18:59:13,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 18:59:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686143740] [2023-11-21 18:59:13,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686143740] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 18:59:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128619590] [2023-11-21 18:59:13,683 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-21 18:59:13,684 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 18:59:13,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 18:59:13,696 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 18:59:13,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 18:59:15,541 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2023-11-21 18:59:15,590 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-21 18:59:15,592 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 18:59:38,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '560#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_24| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~u~0#1_BEFORE_CALL_11| Int)) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~u~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_11|)) 4294967296) (* 2 (mod (* |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_24| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_29|) 2147483648))))))' at error location [2023-11-21 18:59:38,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 18:59:38,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 18:59:38,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 13 [2023-11-21 18:59:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869301419] [2023-11-21 18:59:38,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 18:59:38,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 18:59:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:59:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 18:59:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=538, Unknown=8, NotChecked=0, Total=650 [2023-11-21 18:59:38,716 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-21 18:59:45,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-21 18:59:45,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:59:45,622 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-11-21 18:59:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 18:59:45,623 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 33 [2023-11-21 18:59:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:59:45,624 INFO L225 Difference]: With dead ends: 37 [2023-11-21 18:59:45,624 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 18:59:45,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=125, Invalid=678, Unknown=9, NotChecked=0, Total=812 [2023-11-21 18:59:45,627 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-21 18:59:45,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 89 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-21 18:59:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 18:59:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 18:59:45,630 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) [2023-11-21 18:59:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 18:59:45,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2023-11-21 18:59:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:59:45,631 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 18:59:45,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-21 18:59:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 18:59:45,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 18:59:45,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 18:59:45,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 18:59:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 18:59:45,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 18:59:55,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 18:59:55,718 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) [2023-11-21 18:59:55,718 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) [2023-11-21 18:59:55,718 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) [2023-11-21 18:59:55,719 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) [2023-11-21 18:59:55,719 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-11-21 18:59:55,719 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-11-21 18:59:55,719 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-11-21 18:59:55,720 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 18:59:55,720 INFO L895 garLoopResultBuilder]: At program point L38(line 38) 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)) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) [2023-11-21 18:59:55,720 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2023-11-21 18:59:55,720 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-11-21 18:59:55,721 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) [2023-11-21 18:59:55,721 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 37 50) 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)) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) [2023-11-21 18:59:55,721 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 37 50) 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)) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 2) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (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|))) [2023-11-21 18:59:55,722 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-11-21 18:59:55,722 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-11-21 18:59:55,722 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-11-21 18:59:55,722 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-11-21 18:59:55,723 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-11-21 18:59:55,723 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-11-21 18:59:55,723 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-11-21 18:59:55,723 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-11-21 18:59:55,728 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 18:59:55,730 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:59:55,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:59:55 BoogieIcfgContainer [2023-11-21 18:59:55,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:59:55,749 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:59:55,749 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:59:55,749 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:59:55,750 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:59:07" (3/4) ... [2023-11-21 18:59:55,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 18:59:55,757 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-21 18:59:55,757 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-21 18:59:55,765 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-21 18:59:55,765 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-21 18:59:55,766 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 18:59:55,766 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:59:55,766 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:59:55,909 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 18:59:55,909 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 18:59:55,909 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:59:55,910 INFO L158 Benchmark]: Toolchain (without parser) took 49166.74ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 152.7MB in the beginning and 159.5MB in the end (delta: -6.8MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-21 18:59:55,911 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.4MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:59:55,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.93ms. Allocated memory is still 182.5MB. Free memory was 152.5MB in the beginning and 145.1MB in the end (delta: 7.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-11-21 18:59:55,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.14ms. Allocated memory is still 182.5MB. Free memory was 145.1MB in the beginning and 143.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:59:55,913 INFO L158 Benchmark]: Boogie Preprocessor took 24.32ms. Allocated memory is still 182.5MB. Free memory was 143.0MB in the beginning and 142.1MB in the end (delta: 883.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:59:55,913 INFO L158 Benchmark]: RCFGBuilder took 430.09ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 129.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 18:59:55,914 INFO L158 Benchmark]: TraceAbstraction took 48250.49ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 128.3MB in the beginning and 163.7MB in the end (delta: -35.4MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2023-11-21 18:59:55,914 INFO L158 Benchmark]: Witness Printer took 160.67ms. Allocated memory is still 220.2MB. Free memory was 163.7MB in the beginning and 159.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:59:55,918 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.4MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.93ms. Allocated memory is still 182.5MB. Free memory was 152.5MB in the beginning and 145.1MB in the end (delta: 7.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.14ms. Allocated memory is still 182.5MB. Free memory was 145.1MB in the beginning and 143.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.32ms. Allocated memory is still 182.5MB. Free memory was 143.0MB in the beginning and 142.1MB in the end (delta: 883.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.09ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 129.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 48250.49ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 128.3MB in the beginning and 163.7MB in the end (delta: -35.4MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. * Witness Printer took 160.67ms. Allocated memory is still 220.2MB. Free memory was 163.7MB in the beginning and 159.5MB 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.1s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 59 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 27.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 23 PreInvPairs, 32 NumberOfFragments, 138 HoareAnnotationTreeSize, 23 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 240 FormulaSimplificationTreeSizeReductionInter, 9.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 459 SizeOfPredicates, 11 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 118/128 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 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((a * b) % 2147483648) * 2) == (((v * y) + (u * x)) % 4294967296)) && ((a % 4294967296) <= 2)) && (1 <= (b % 4294967296))) RESULT: Ultimate proved your program to be correct! [2023-11-21 18:59:56,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40e37409-1f1d-4ab8-8d33-c75969ef5a23/bin/utaipan-verify-QoSU8krkJ5/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