./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.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_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 74c5f41427fcd5f7006677941b6f3ff4d210550b7e3610a7968cf5a360f424cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:50,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:50,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:54:50,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:50,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:54:50,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:54:50,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:54:50,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:54:50,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:54:50,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:54:50,175 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:54:50,176 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:54:50,176 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:54:50,177 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:54:50,178 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:54:50,178 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:54:50,179 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:54:50,180 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:54:50,181 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:54:50,181 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:54:50,182 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:54:50,183 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:54:50,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:54:50,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:54:50,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:54:50,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:54:50,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:54:50,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:54:50,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:54:50,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:54:50,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:54:50,190 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:54:50,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:54:50,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:54:50,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:54:50,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:54:50,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:50,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:54:50,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:54:50,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:54:50,196 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:54:50,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:54:50,198 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:54:50,198 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:54:50,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:54:50,199 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_210ac3ac-5b19-461f-98c4-ed37a2444c37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74c5f41427fcd5f7006677941b6f3ff4d210550b7e3610a7968cf5a360f424cc [2023-11-19 04:54:50,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:54:50,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:54:50,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:54:50,638 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:54:50,638 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:54:50,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i [2023-11-19 04:54:54,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:54:54,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:54:54,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i [2023-11-19 04:54:54,411 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data/4425d80c6/c0a6b5559f6740408fc86ff9449eb097/FLAG3e3b92fc7 [2023-11-19 04:54:54,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data/4425d80c6/c0a6b5559f6740408fc86ff9449eb097 [2023-11-19 04:54:54,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:54:54,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:54:54,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:54,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:54:54,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:54:54,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642fd676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54, skipping insertion in model container [2023-11-19 04:54:54,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:54,744 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_210ac3ac-5b19-461f-98c4-ed37a2444c37/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i[915,928] [2023-11-19 04:54:54,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:54,826 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:54:54,842 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_210ac3ac-5b19-461f-98c4-ed37a2444c37/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i[915,928] [2023-11-19 04:54:54,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:54,885 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:54:54,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54 WrapperNode [2023-11-19 04:54:54,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:54,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:54,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:54:54,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:54:54,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,936 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2023-11-19 04:54:54,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:54,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:54:54,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:54:54,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:54:54,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:54,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:54:54,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:54:54,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:54:54,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:54:54,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (1/1) ... [2023-11-19 04:54:55,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:55,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:54:55,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:54:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:54:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:54:55,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:54:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:54:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:54:55,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:54:55,192 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:54:55,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:54:55,491 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:54:55,657 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:54:55,657 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:54:55,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:55 BoogieIcfgContainer [2023-11-19 04:54:55,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:54:55,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:54:55,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:54:55,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:54:55,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:54:54" (1/3) ... [2023-11-19 04:54:55,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c870db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:55, skipping insertion in model container [2023-11-19 04:54:55,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:54" (2/3) ... [2023-11-19 04:54:55,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c870db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:55, skipping insertion in model container [2023-11-19 04:54:55,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:55" (3/3) ... [2023-11-19 04:54:55,683 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-37.i [2023-11-19 04:54:55,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:54:55,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:54:55,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:55,801 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;@706c307a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:55,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:54:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 04:54:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 04:54:55,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:55,822 INFO L195 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:55,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:55,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1315326049, now seen corresponding path program 1 times [2023-11-19 04:54:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:55,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264352853] [2023-11-19 04:54:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:55,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:54:56,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:54:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:54:56,394 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:54:56,397 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:54:56,399 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:54:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:54:56,408 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:54:56,421 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:54:56,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:54:56 BoogieIcfgContainer [2023-11-19 04:54:56,478 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:54:56,479 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:54:56,479 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:54:56,479 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:54:56,480 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:55" (3/4) ... [2023-11-19 04:54:56,483 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:54:56,484 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:54:56,485 INFO L158 Benchmark]: Toolchain (without parser) took 2038.50ms. Allocated memory is still 144.7MB. Free memory was 104.6MB in the beginning and 70.0MB in the end (delta: 34.6MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,486 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:56,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.45ms. Allocated memory is still 144.7MB. Free memory was 104.6MB in the beginning and 113.7MB in the end (delta: -9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,488 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.58ms. Allocated memory is still 144.7MB. Free memory was 113.7MB in the beginning and 111.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,489 INFO L158 Benchmark]: Boogie Preprocessor took 49.90ms. Allocated memory is still 144.7MB. Free memory was 111.8MB in the beginning and 110.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,490 INFO L158 Benchmark]: RCFGBuilder took 675.42ms. Allocated memory is still 144.7MB. Free memory was 110.2MB in the beginning and 93.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,490 INFO L158 Benchmark]: TraceAbstraction took 810.27ms. Allocated memory is still 144.7MB. Free memory was 92.3MB in the beginning and 70.4MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,491 INFO L158 Benchmark]: Witness Printer took 5.66ms. Allocated memory is still 144.7MB. Free memory was 70.4MB in the beginning and 70.0MB in the end (delta: 455.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:56,495 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.45ms. Allocated memory is still 144.7MB. Free memory was 104.6MB in the beginning and 113.7MB in the end (delta: -9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.58ms. Allocated memory is still 144.7MB. Free memory was 113.7MB in the beginning and 111.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.90ms. Allocated memory is still 144.7MB. Free memory was 111.8MB in the beginning and 110.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 675.42ms. Allocated memory is still 144.7MB. Free memory was 110.2MB in the beginning and 93.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 810.27ms. Allocated memory is still 144.7MB. Free memory was 92.3MB in the beginning and 70.4MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.66ms. Allocated memory is still 144.7MB. Free memory was 70.4MB in the beginning and 70.0MB in the end (delta: 455.1kB). 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 someBinaryDOUBLEComparisonOperation at line 34. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -25; [L23] double var_1_2 = 0.19999999999999996; [L24] double var_1_3 = 9.4; [L25] signed long int var_1_4 = 50; [L26] unsigned long int var_1_5 = 32; [L27] unsigned char var_1_6 = 1; [L28] unsigned char var_1_7 = 1; [L29] double var_1_8 = 9.75; [L30] double var_1_9 = 49.8; [L75] isInitial = 1 [L76] FCALL initially() [L77] COND TRUE 1 [L78] FCALL updateLastVariables() [L79] CALL updateVariables() [L49] var_1_2 = __VERIFIER_nondet_double() [L50] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=47/5, var_1_4=50, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L50] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-25, var_1_3=47/5, var_1_4=50, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L51] var_1_3 = __VERIFIER_nondet_double() [L52] CALL assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=50, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=50, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L53] var_1_4 = __VERIFIER_nondet_long() [L54] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L55] CALL assume_abort_if_not(var_1_4 <= 2147483646) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_4 <= 2147483646) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L56] var_1_6 = __VERIFIER_nondet_uchar() [L57] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L58] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L59] var_1_7 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L61] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=39/4, var_1_9=249/5] [L62] var_1_8 = __VERIFIER_nondet_double() [L63] CALL assume_abort_if_not((var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=249/5] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not((var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=249/5] [L64] CALL assume_abort_if_not(var_1_8 != 0.0F) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=249/5] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_8 != 0.0F) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=249/5] [L65] var_1_9 = __VERIFIER_nondet_double() [L66] CALL assume_abort_if_not((var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=262] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not((var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=32, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=262] [L79] RET updateVariables() [L80] CALL step() [L34] COND FALSE !(var_1_2 < var_1_3) [L37] unsigned char stepLocal_0 = var_1_6; [L38] COND TRUE stepLocal_0 && var_1_7 [L39] COND TRUE var_1_3 < ((var_1_2 / var_1_8) + var_1_9) [L40] var_1_5 = var_1_4 [L80] RET step() [L81] CALL, EXPR property() [L71-L72] return ((var_1_2 < var_1_3) ? (var_1_1 == ((signed long int) (2 - var_1_4))) : 1) && ((var_1_6 && var_1_7) ? ((var_1_3 < ((var_1_2 / var_1_8) + var_1_9)) ? (var_1_5 == ((unsigned long int) var_1_4)) : (var_1_5 == ((unsigned long int) var_1_4))) : (var_1_5 == ((unsigned long int) var_1_4))) ; [L81] RET, EXPR property() [L81] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=28, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=262] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=-25, var_1_3=263, var_1_4=28, var_1_5=28, var_1_6=1, var_1_7=1, var_1_8=264, var_1_9=262] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 11, 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=27occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 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 04:54:56,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 74c5f41427fcd5f7006677941b6f3ff4d210550b7e3610a7968cf5a360f424cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:59,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:59,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:54:59,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:59,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:55:00,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:55:00,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:55:00,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:55:00,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:55:00,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:55:00,028 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:55:00,029 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:55:00,029 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:55:00,032 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:55:00,033 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:55:00,033 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:55:00,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:55:00,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:55:00,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:55:00,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:55:00,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:55:00,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:55:00,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:55:00,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:55:00,040 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:55:00,040 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:55:00,041 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:55:00,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:55:00,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:55:00,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:55:00,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:55:00,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:55:00,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:55:00,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:00,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:55:00,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:55:00,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:55:00,046 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:55:00,046 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:55:00,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:55:00,048 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:55:00,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:55:00,048 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_210ac3ac-5b19-461f-98c4-ed37a2444c37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74c5f41427fcd5f7006677941b6f3ff4d210550b7e3610a7968cf5a360f424cc [2023-11-19 04:55:00,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:55:00,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:55:00,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:55:00,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:55:00,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:55:00,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i [2023-11-19 04:55:04,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:55:04,829 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:55:04,831 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i [2023-11-19 04:55:04,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data/8896b92d2/ab7dac0439e646b9b872483a8879aae1/FLAGd49ae0e73 [2023-11-19 04:55:04,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/data/8896b92d2/ab7dac0439e646b9b872483a8879aae1 [2023-11-19 04:55:04,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:55:04,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:55:04,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:04,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:55:04,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:55:04,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:04" (1/1) ... [2023-11-19 04:55:04,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281ef371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04, skipping insertion in model container [2023-11-19 04:55:04,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:04" (1/1) ... [2023-11-19 04:55:04,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:55:05,160 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_210ac3ac-5b19-461f-98c4-ed37a2444c37/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i[915,928] [2023-11-19 04:55:05,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:05,248 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:55:05,267 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_210ac3ac-5b19-461f-98c4-ed37a2444c37/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-37.i[915,928] [2023-11-19 04:55:05,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:05,374 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:55:05,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05 WrapperNode [2023-11-19 04:55:05,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:05,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:05,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:55:05,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:55:05,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,515 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 83 [2023-11-19 04:55:05,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:05,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:55:05,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:55:05,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:55:05,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:55:05,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:55:05,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:55:05,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:55:05,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (1/1) ... [2023-11-19 04:55:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:05,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:05,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:55:05,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:55:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:55:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:55:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:55:05,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:55:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:55:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:55:05,807 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:55:05,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:55:10,355 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:55:10,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:55:10,381 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:55:10,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:10 BoogieIcfgContainer [2023-11-19 04:55:10,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:55:10,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:55:10,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:55:10,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:55:10,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:04" (1/3) ... [2023-11-19 04:55:10,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144edb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:10, skipping insertion in model container [2023-11-19 04:55:10,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:05" (2/3) ... [2023-11-19 04:55:10,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144edb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:10, skipping insertion in model container [2023-11-19 04:55:10,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:10" (3/3) ... [2023-11-19 04:55:10,400 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-37.i [2023-11-19 04:55:10,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:55:10,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:55:10,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:55:10,493 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;@62db34cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:55:10,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:55:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 04:55:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 04:55:10,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:10,514 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:10,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:55:10,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash -861756449, now seen corresponding path program 1 times [2023-11-19 04:55:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:55:10,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848699057] [2023-11-19 04:55:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:10,533 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 04:55:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:55:10,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 04:55:10,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 04:55:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:10,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:55:10,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 04:55:11,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:11,368 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:55:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848699057] [2023-11-19 04:55:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848699057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:11,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:11,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:55:11,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706871813] [2023-11-19 04:55:11,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:55:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:55:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:55:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:55:11,426 INFO L87 Difference]: Start difference. First operand has 41 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 04:55:14,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:16,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:18,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:20,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:22,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:24,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:26,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:28,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:31,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:33,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:35,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:37,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:40,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:42,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:44,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:46,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:48,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:50,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:50,769 INFO L93 Difference]: Finished difference Result 115 states and 191 transitions. [2023-11-19 04:55:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:55:50,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 74 [2023-11-19 04:55:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:50,861 INFO L225 Difference]: With dead ends: 115 [2023-11-19 04:55:50,862 INFO L226 Difference]: Without dead ends: 77 [2023-11-19 04:55:50,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:55:50,870 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 50 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:50,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 296 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 18 Unknown, 0 Unchecked, 39.0s Time] [2023-11-19 04:55:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-19 04:55:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2023-11-19 04:55:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 states have internal predecessors, (43), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:55:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-11-19 04:55:50,933 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 74 [2023-11-19 04:55:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:50,945 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-11-19 04:55:50,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 04:55:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-11-19 04:55:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 04:55:50,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:50,950 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:50,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 04:55:51,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:55:51,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash 913250913, now seen corresponding path program 1 times [2023-11-19 04:55:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:55:51,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390964216] [2023-11-19 04:55:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:51,155 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 04:55:51,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:55:51,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 04:55:51,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_210ac3ac-5b19-461f-98c4-ed37a2444c37/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 04:55:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:51,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:55:51,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 04:55:51,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:51,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:55:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390964216] [2023-11-19 04:55:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390964216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:51,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:51,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:55:51,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331711590] [2023-11-19 04:55:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:51,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:55:51,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:55:51,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:55:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:55:51,950 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 04:55:54,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:55:56,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []