./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ --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 10a9495afb29780d9c21c7755abad4b20c63b8e644f74495b9c8dc8e6948c615 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:02,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:03,076 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:14:03,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:03,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:03,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:03,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:03,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:03,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:03,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:03,121 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:03,122 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:03,123 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:03,123 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:03,124 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:03,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:03,126 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:03,126 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:03,127 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:03,128 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:03,129 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:03,130 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:03,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:03,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:03,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:03,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:03,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:03,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:03,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:03,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:03,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:03,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:03,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:03,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:03,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:03,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:03,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:03,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:03,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:03,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:03,142 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:03,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:03,143 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:03,144 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:03,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:03,144 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_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10a9495afb29780d9c21c7755abad4b20c63b8e644f74495b9c8dc8e6948c615 [2023-11-19 04:14:03,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:03,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:03,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:03,563 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:03,563 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:03,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i [2023-11-19 04:14:07,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:07,446 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:07,447 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i [2023-11-19 04:14:07,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data/9a227e2aa/52a70a3db41e4e6d94f584295c8d6929/FLAGd70fcc15b [2023-11-19 04:14:07,473 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data/9a227e2aa/52a70a3db41e4e6d94f584295c8d6929 [2023-11-19 04:14:07,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:07,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:07,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:07,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:07,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:07,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539778cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07, skipping insertion in model container [2023-11-19 04:14:07,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:07,717 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_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i[915,928] [2023-11-19 04:14:07,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:07,765 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:07,782 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_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i[915,928] [2023-11-19 04:14:07,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:07,818 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:07,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07 WrapperNode [2023-11-19 04:14:07,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:07,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:07,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:07,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:07,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,868 INFO L138 Inliner]: procedures = 26, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 58 [2023-11-19 04:14:07,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:07,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:07,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:07,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:07,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:07,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:07,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:07,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:07,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (1/1) ... [2023-11-19 04:14:07,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:07,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:07,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:08,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:08,140 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:08,143 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:08,404 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:08,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:08,594 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:08,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:08 BoogieIcfgContainer [2023-11-19 04:14:08,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:08,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:08,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:08,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:08,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:07" (1/3) ... [2023-11-19 04:14:08,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5745d16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:08, skipping insertion in model container [2023-11-19 04:14:08,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:07" (2/3) ... [2023-11-19 04:14:08,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5745d16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:08, skipping insertion in model container [2023-11-19 04:14:08,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:08" (3/3) ... [2023-11-19 04:14:08,610 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-33.i [2023-11-19 04:14:08,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:08,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:08,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:08,686 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;@4942cc28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:08,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:14:08,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:08,703 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:08,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:08,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1230325643, now seen corresponding path program 1 times [2023-11-19 04:14:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626208188] [2023-11-19 04:14:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:14:08,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:14:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:14:09,025 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:14:09,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:14:09,029 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:14:09,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:14:09,038 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:14:09,044 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:14:09,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:14:09 BoogieIcfgContainer [2023-11-19 04:14:09,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:14:09,094 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:14:09,095 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:14:09,095 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:14:09,096 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:08" (3/4) ... [2023-11-19 04:14:09,102 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:14:09,104 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:14:09,106 INFO L158 Benchmark]: Toolchain (without parser) took 1627.31ms. Allocated memory is still 151.0MB. Free memory was 107.4MB in the beginning and 99.4MB in the end (delta: 8.0MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,107 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:09,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.25ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 96.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.72ms. Allocated memory is still 151.0MB. Free memory was 96.2MB in the beginning and 94.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,113 INFO L158 Benchmark]: Boogie Preprocessor took 41.06ms. Allocated memory is still 151.0MB. Free memory was 94.5MB in the beginning and 93.6MB in the end (delta: 882.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:09,121 INFO L158 Benchmark]: RCFGBuilder took 687.71ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 119.1MB in the end (delta: -25.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,123 INFO L158 Benchmark]: TraceAbstraction took 486.81ms. Allocated memory is still 151.0MB. Free memory was 118.3MB in the beginning and 100.2MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:14:09,125 INFO L158 Benchmark]: Witness Printer took 9.80ms. Allocated memory is still 151.0MB. Free memory was 100.2MB in the beginning and 99.4MB in the end (delta: 781.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:09,131 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.25ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 96.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.72ms. Allocated memory is still 151.0MB. Free memory was 96.2MB in the beginning and 94.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.06ms. Allocated memory is still 151.0MB. Free memory was 94.5MB in the beginning and 93.6MB in the end (delta: 882.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 687.71ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 119.1MB in the end (delta: -25.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 486.81ms. Allocated memory is still 151.0MB. Free memory was 118.3MB in the beginning and 100.2MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 9.80ms. Allocated memory is still 151.0MB. Free memory was 100.2MB in the beginning and 99.4MB in the end (delta: 781.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 52. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 256.25; [L23] float var_1_6 = 1000000000.625; [L24] signed char var_1_7 = -128; [L25] signed char var_1_8 = 32; [L26] unsigned long int var_1_9 = 32; [L27] unsigned char var_1_10 = 0; [L56] isInitial = 1 [L57] FCALL initially() [L58] COND TRUE 1 [L59] FCALL updateLastVariables() [L60] CALL updateVariables() [L43] var_1_6 = __VERIFIER_nondet_float() [L44] CALL assume_abort_if_not((var_1_6 >= -922337.2036854765600e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=1025/4, var_1_7=-128, var_1_8=32, var_1_9=32] [L20] COND FALSE !(!cond) [L44] RET assume_abort_if_not((var_1_6 >= -922337.2036854765600e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_1=1025/4, var_1_7=-128, var_1_8=32, var_1_9=32] [L45] var_1_8 = __VERIFIER_nondet_char() [L46] CALL assume_abort_if_not(var_1_8 >= -127) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=1025/4, var_1_7=-128, var_1_8=126, var_1_9=32] [L20] COND FALSE !(!cond) [L46] RET assume_abort_if_not(var_1_8 >= -127) VAL [isInitial=1, var_1_10=0, var_1_1=1025/4, var_1_7=-128, var_1_8=126, var_1_9=32] [L47] CALL assume_abort_if_not(var_1_8 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_1=1025/4, var_1_7=-128, var_1_8=126, var_1_9=32] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not(var_1_8 <= 126) VAL [isInitial=1, var_1_10=0, var_1_1=1025/4, var_1_7=-128, var_1_8=126, var_1_9=32] [L60] RET updateVariables() [L61] CALL step() [L31] var_1_7 = var_1_8 [L32] var_1_9 = var_1_7 [L33] var_1_10 = 1 [L34] unsigned long int stepLocal_1 = var_1_9; [L35] unsigned char stepLocal_0 = var_1_10 && var_1_10; [L36] COND TRUE (var_1_7 >= var_1_9) || stepLocal_0 [L37] COND TRUE stepLocal_1 <= var_1_7 [L38] var_1_1 = var_1_6 [L61] RET step() [L62] CALL, EXPR property() [L52-L53] return (((((var_1_7 >= var_1_9) || (var_1_10 && var_1_10)) ? ((var_1_9 <= var_1_7) ? (var_1_1 == ((float) var_1_6)) : 1) : 1) && (var_1_7 == ((signed char) var_1_8))) && (var_1_9 == ((unsigned long int) var_1_7))) && (var_1_10 == ((unsigned char) 1)) ; [L62] RET, EXPR property() [L62] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=1, var_1_1=1025/4, var_1_6=1025/4, var_1_7=126, var_1_8=126, var_1_9=126] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=1, var_1_1=1025/4, var_1_6=1025/4, var_1_7=126, var_1_8=126, var_1_9=126] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:14:09,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ --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 10a9495afb29780d9c21c7755abad4b20c63b8e644f74495b9c8dc8e6948c615 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:12,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:12,499 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:14:12,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:12,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:12,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:12,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:12,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:12,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:12,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:12,548 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:12,549 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:12,550 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:12,551 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:12,551 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:12,552 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:12,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:12,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:12,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:12,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:12,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:12,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:12,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:12,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:12,560 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:14:12,560 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:14:12,561 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:14:12,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:12,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:12,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:12,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:12,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:14:12,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:12,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:12,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:12,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:12,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:12,567 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:14:12,567 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:14:12,568 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:12,568 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:12,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:12,571 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10a9495afb29780d9c21c7755abad4b20c63b8e644f74495b9c8dc8e6948c615 [2023-11-19 04:14:13,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:13,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:13,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:13,147 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:13,148 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:13,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i [2023-11-19 04:14:16,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:17,275 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:17,276 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i [2023-11-19 04:14:17,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data/e2cf62b1e/9d3fba90e79c4d51b6d42484bb848734/FLAG22a36adb5 [2023-11-19 04:14:17,300 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/data/e2cf62b1e/9d3fba90e79c4d51b6d42484bb848734 [2023-11-19 04:14:17,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:17,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:17,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:17,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:17,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:17,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eff3c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17, skipping insertion in model container [2023-11-19 04:14:17,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:17,487 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_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i[915,928] [2023-11-19 04:14:17,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:17,531 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:17,545 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_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-33.i[915,928] [2023-11-19 04:14:17,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:17,573 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:17,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17 WrapperNode [2023-11-19 04:14:17,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:17,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:17,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:17,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:17,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,616 INFO L138 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 57 [2023-11-19 04:14:17,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:17,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:17,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:17,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:17,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:17,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:17,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:17,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:17,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:17,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:17,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:17,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:14:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:17,875 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:17,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:18,221 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:18,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:18,244 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:18,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:18 BoogieIcfgContainer [2023-11-19 04:14:18,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:18,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:18,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:18,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:18,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:17" (1/3) ... [2023-11-19 04:14:18,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a626921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:18, skipping insertion in model container [2023-11-19 04:14:18,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (2/3) ... [2023-11-19 04:14:18,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a626921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:18, skipping insertion in model container [2023-11-19 04:14:18,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:18" (3/3) ... [2023-11-19 04:14:18,266 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-33.i [2023-11-19 04:14:18,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:18,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:18,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:18,385 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;@2e41f96d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:18,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:14:18,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:18,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:18,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:18,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1440290685, now seen corresponding path program 1 times [2023-11-19 04:14:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816938161] [2023-11-19 04:14:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:18,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:18,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:18,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:14:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:18,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:14:18,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:14:18,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:18,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816938161] [2023-11-19 04:14:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816938161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:18,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:18,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:18,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567406195] [2023-11-19 04:14:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:18,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:14:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:14:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:14:18,736 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:14:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:18,768 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2023-11-19 04:14:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:14:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 04:14:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:18,779 INFO L225 Difference]: With dead ends: 45 [2023-11-19 04:14:18,779 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 04:14:18,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:14:18,791 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:18,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 04:14:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-19 04:14:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-19 04:14:18,866 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 27 [2023-11-19 04:14:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:18,867 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-19 04:14:18,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:14:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-19 04:14:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:14:18,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:18,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:18,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 04:14:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:19,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:19,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:19,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1705969281, now seen corresponding path program 1 times [2023-11-19 04:14:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:19,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260835416] [2023-11-19 04:14:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:19,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:19,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:19,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:14:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:19,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:14:19,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:14:19,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:19,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260835416] [2023-11-19 04:14:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260835416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:19,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:19,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169634459] [2023-11-19 04:14:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:19,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:19,271 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:14:19,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:19,306 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2023-11-19 04:14:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:19,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 04:14:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:19,309 INFO L225 Difference]: With dead ends: 52 [2023-11-19 04:14:19,309 INFO L226 Difference]: Without dead ends: 33 [2023-11-19 04:14:19,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:19,312 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:19,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-19 04:14:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2023-11-19 04:14:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-11-19 04:14:19,321 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 27 [2023-11-19 04:14:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:19,323 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-11-19 04:14:19,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:14:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-11-19 04:14:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:14:19,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:19,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:19,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:19,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:19,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:19,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1109879818, now seen corresponding path program 1 times [2023-11-19 04:14:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513474407] [2023-11-19 04:14:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:19,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:19,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:19,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:19,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:14:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:19,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:14:19,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:14:20,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:14:21,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:21,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513474407] [2023-11-19 04:14:21,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513474407] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [351159184] [2023-11-19 04:14:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:21,551 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:14:21,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:14:21,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:14:21,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-19 04:14:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:21,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:14:21,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:14:22,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:14:22,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [351159184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:22,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318755968] [2023-11-19 04:14:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:22,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:22,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:22,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:22,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:14:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:22,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:14:22,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:14:23,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:14:23,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318755968] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:23,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:14:23,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 19 [2023-11-19 04:14:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903305050] [2023-11-19 04:14:23,967 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:14:23,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 04:14:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 04:14:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:14:23,975 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 04:14:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:25,335 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-11-19 04:14:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 04:14:25,336 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 28 [2023-11-19 04:14:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:25,337 INFO L225 Difference]: With dead ends: 45 [2023-11-19 04:14:25,338 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 04:14:25,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:14:25,340 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 91 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:25,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 127 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 04:14:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2023-11-19 04:14:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-11-19 04:14:25,351 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 28 [2023-11-19 04:14:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:25,351 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-11-19 04:14:25,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 04:14:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-11-19 04:14:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:14:25,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:25,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:25,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:25,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:25,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 04:14:25,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:25,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:25,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1111726860, now seen corresponding path program 1 times [2023-11-19 04:14:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:14:25,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167516496] [2023-11-19 04:14:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:25,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:25,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:14:25,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:14:25,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 04:14:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:26,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:14:26,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:14:26,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:26,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:14:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167516496] [2023-11-19 04:14:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167516496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:26,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:26,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373986283] [2023-11-19 04:14:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:26,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:14:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:26,043 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:14:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:26,059 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2023-11-19 04:14:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:26,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-19 04:14:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:26,061 INFO L225 Difference]: With dead ends: 50 [2023-11-19 04:14:26,061 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:14:26,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:26,063 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:26,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:26,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:14:26,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:14:26,072 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) [2023-11-19 04:14:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:14:26,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-11-19 04:14:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:26,073 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:14:26,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:14:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:14:26,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:14:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:14:26,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:26,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:14:26,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:14:26,578 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-19 04:14:26,578 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 04:14:26,578 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-19 04:14:26,578 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2023-11-19 04:14:26,578 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-11-19 04:14:26,578 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 55 66) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2023-11-19 04:14:26,579 INFO L899 garLoopResultBuilder]: For program point property_returnLabel#1(lines 51 54) no Hoare annotation was computed. [2023-11-19 04:14:26,580 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2023-11-19 04:14:26,580 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:14:26,580 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 64) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 9223372036854765600.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0)))) (or (and (fp.leq ~var_1_6~0 .cse0) (fp.geq ~var_1_6~0 .cse1)) (and (fp.geq ~var_1_6~0 (fp.neg .cse0)) (fp.leq ~var_1_6~0 (fp.neg .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 04:14:26,580 INFO L899 garLoopResultBuilder]: For program point L58-3(lines 58 64) no Hoare annotation was computed. [2023-11-19 04:14:26,580 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 9223372036854765600.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0)))) (or (and (fp.leq ~var_1_6~0 .cse0) (fp.geq ~var_1_6~0 .cse1)) (and (fp.geq ~var_1_6~0 (fp.neg .cse0)) (fp.leq ~var_1_6~0 (fp.neg .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 04:14:26,580 INFO L895 garLoopResultBuilder]: At program point L46-1(line 46) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 9223372036854765600.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 100000000000000000000.0)))) (or (and (fp.leq ~var_1_6~0 .cse0) (fp.geq ~var_1_6~0 .cse1)) (and (fp.geq ~var_1_6~0 (fp.neg .cse0)) (fp.leq ~var_1_6~0 (fp.neg .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 04:14:26,581 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:14:26,581 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 41) no Hoare annotation was computed. [2023-11-19 04:14:26,581 INFO L899 garLoopResultBuilder]: For program point L47(lines 42 48) no Hoare annotation was computed. [2023-11-19 04:14:26,581 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-19 04:14:26,581 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-19 04:14:26,581 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-19 04:14:26,581 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-19 04:14:26,590 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 04:14:26,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:14:26,605 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 04:14:26,606 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 04:14:26,606 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 04:14:26,607 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 04:14:26,607 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 04:14:26,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:14:26 BoogieIcfgContainer [2023-11-19 04:14:26,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:14:26,609 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:14:26,609 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:14:26,609 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:14:26,609 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:18" (3/4) ... [2023-11-19 04:14:26,613 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:14:26,617 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 04:14:26,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 04:14:26,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 04:14:26,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:14:26,624 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:14:26,722 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:14:26,723 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:14:26,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:14:26,724 INFO L158 Benchmark]: Toolchain (without parser) took 9419.61ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 57.7MB in the beginning and 48.2MB in the end (delta: 9.5MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,724 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 57.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:26,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.78ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 46.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.30ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 44.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,725 INFO L158 Benchmark]: Boogie Preprocessor took 61.46ms. Allocated memory is still 81.8MB. Free memory was 44.4MB in the beginning and 42.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,726 INFO L158 Benchmark]: RCFGBuilder took 572.61ms. Allocated memory is still 81.8MB. Free memory was 42.8MB in the beginning and 55.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,726 INFO L158 Benchmark]: TraceAbstraction took 8353.22ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 54.4MB in the beginning and 52.3MB in the end (delta: 2.0MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,727 INFO L158 Benchmark]: Witness Printer took 114.54ms. Allocated memory is still 125.8MB. Free memory was 52.3MB in the beginning and 48.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:14:26,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 57.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.78ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 46.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.30ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 44.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.46ms. Allocated memory is still 81.8MB. Free memory was 44.4MB in the beginning and 42.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 572.61ms. Allocated memory is still 81.8MB. Free memory was 42.8MB in the beginning and 55.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8353.22ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 54.4MB in the beginning and 52.3MB in the end (delta: 2.0MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * Witness Printer took 114.54ms. Allocated memory is still 125.8MB. Free memory was 52.3MB in the beginning and 48.2MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * 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: 19]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 103 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 16 PreInvPairs, 20 NumberOfFragments, 91 HoareAnnotationTreeSize, 16 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 213 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 1756 SizeOfPredicates, 44 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 70/108 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: 58]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-19 04:14:26,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffe8c59f-3bdd-4b69-b5f8-c66fb3339c38/bin/utaipan-verify-t7M7D8N6sZ/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