./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 a34563caff72f9866734a8c4a4a8c9466c16382116556c064cc74473d1c9ecfd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:57,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:57,172 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:21:57,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:57,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:57,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:57,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:57,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:57,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:57,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:57,231 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:57,232 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:57,232 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:57,233 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:57,233 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:57,234 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:57,235 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:57,235 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:57,236 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:57,236 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:57,237 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:57,237 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:57,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:57,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:57,239 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:21:57,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:57,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:21:57,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:57,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:57,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:57,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:57,243 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:21:57,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:57,244 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:57,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:57,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:57,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:57,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:57,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:57,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:57,247 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:57,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:57,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:57,249 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:57,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:57,250 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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a34563caff72f9866734a8c4a4a8c9466c16382116556c064cc74473d1c9ecfd [2023-11-19 05:21:57,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:57,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:57,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:57,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:57,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:57,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i [2023-11-19 05:22:00,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:01,077 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:01,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i [2023-11-19 05:22:01,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data/e7976e3d8/55804599822c43ef8b0c243d0e93cde7/FLAG91b1d4380 [2023-11-19 05:22:01,111 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data/e7976e3d8/55804599822c43ef8b0c243d0e93cde7 [2023-11-19 05:22:01,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:01,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:01,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:01,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:01,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:01,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2ec365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01, skipping insertion in model container [2023-11-19 05:22:01,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:01,368 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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i[915,928] [2023-11-19 05:22:01,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:01,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:01,456 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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i[915,928] [2023-11-19 05:22:01,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:01,510 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:01,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01 WrapperNode [2023-11-19 05:22:01,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:01,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:01,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:01,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:01,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,602 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2023-11-19 05:22:01,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:01,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:01,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:01,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:01,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:01,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:01,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:01,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:01,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (1/1) ... [2023-11-19 05:22:01,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:01,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:01,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:22:01,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:22:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:22:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:01,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:01,908 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:01,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:02,321 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:02,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:02,511 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:22:02,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:02 BoogieIcfgContainer [2023-11-19 05:22:02,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:02,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:02,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:02,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:02,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:01" (1/3) ... [2023-11-19 05:22:02,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b817811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:02, skipping insertion in model container [2023-11-19 05:22:02,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:01" (2/3) ... [2023-11-19 05:22:02,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b817811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:02, skipping insertion in model container [2023-11-19 05:22:02,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:02" (3/3) ... [2023-11-19 05:22:02,528 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-41.i [2023-11-19 05:22:02,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:02,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:22:02,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:02,595 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;@3f0ac2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:02,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:22:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:22:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:22:02,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:02,610 INFO L195 NwaCegarLoop]: trace histogram [13, 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 05:22:02,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:02,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -941183481, now seen corresponding path program 1 times [2023-11-19 05:22:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951790547] [2023-11-19 05:22:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:02,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:02,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:22:02,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985734102] [2023-11-19 05:22:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:02,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:02,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:22:02,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:22:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:22:03,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:22:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:22:03,345 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:22:03,348 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:22:03,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:22:03,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:22:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:22:03,563 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:22:03,567 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:22:03,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:22:03 BoogieIcfgContainer [2023-11-19 05:22:03,632 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:22:03,632 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:22:03,633 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:22:03,633 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:22:03,633 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:02" (3/4) ... [2023-11-19 05:22:03,635 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:22:03,637 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:22:03,638 INFO L158 Benchmark]: Toolchain (without parser) took 2518.57ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 116.3MB in the beginning and 140.3MB in the end (delta: -24.0MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2023-11-19 05:22:03,639 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:22:03,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.34ms. Allocated memory is still 148.9MB. Free memory was 115.7MB in the beginning and 102.3MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:22:03,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.44ms. Allocated memory is still 148.9MB. Free memory was 102.3MB in the beginning and 99.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:22:03,641 INFO L158 Benchmark]: Boogie Preprocessor took 40.94ms. Allocated memory is still 148.9MB. Free memory was 99.0MB in the beginning and 96.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:22:03,641 INFO L158 Benchmark]: RCFGBuilder took 871.39ms. Allocated memory is still 148.9MB. Free memory was 96.9MB in the beginning and 81.7MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:22:03,642 INFO L158 Benchmark]: TraceAbstraction took 1111.02ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 80.5MB in the beginning and 140.3MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:22:03,643 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 180.4MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:22:03,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.34ms. Allocated memory is still 148.9MB. Free memory was 115.7MB in the beginning and 102.3MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.44ms. Allocated memory is still 148.9MB. Free memory was 102.3MB in the beginning and 99.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.94ms. Allocated memory is still 148.9MB. Free memory was 99.0MB in the beginning and 96.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 871.39ms. Allocated memory is still 148.9MB. Free memory was 96.9MB in the beginning and 81.7MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1111.02ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 80.5MB in the beginning and 140.3MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 180.4MB. Free memory is still 140.3MB. 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 55, overapproximation of someBinaryDOUBLEComparisonOperation at line 50. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 0; [L23] unsigned char var_1_4 = 1; [L24] unsigned char var_1_5 = 1; [L25] unsigned char var_1_6 = 0; [L26] signed char var_1_8 = 64; [L27] signed char var_1_11 = -10; [L28] signed char var_1_12 = 64; [L29] float var_1_13 = 1.6; [L30] float var_1_14 = 3.5; [L31] unsigned char var_1_15 = 8; [L32] unsigned char var_1_16 = 4; [L33] unsigned short int var_1_17 = 2; [L34] unsigned short int var_1_18 = 10000; [L35] signed short int var_1_20 = 4; [L36] signed char var_1_22 = -32; [L37] unsigned long int var_1_23 = 0; [L38] unsigned char last_1_var_1_15 = 8; [L116] isInitial = 1 [L117] FCALL initially() [L118] int k_loop; [L119] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L119] COND TRUE k_loop < 1 [L120] CALL updateLastVariables() [L109] last_1_var_1_15 = var_1_15 [L120] RET updateLastVariables() [L121] CALL updateVariables() [L87] var_1_4 = __VERIFIER_nondet_uchar() [L88] CALL assume_abort_if_not(var_1_4 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_4 >= 1) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L89] CALL assume_abort_if_not(var_1_4 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_4 <= 1) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L90] var_1_5 = __VERIFIER_nondet_uchar() [L91] CALL assume_abort_if_not(var_1_5 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_5 >= 1) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L92] CALL assume_abort_if_not(var_1_5 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_5 <= 1) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=-10, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L93] var_1_11 = __VERIFIER_nondet_char() [L94] CALL assume_abort_if_not(var_1_11 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_11 >= -127) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L95] CALL assume_abort_if_not(var_1_11 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_11 <= 126) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=64, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L96] var_1_12 = __VERIFIER_nondet_char() [L97] CALL assume_abort_if_not(var_1_12 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_12 >= -127) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L98] CALL assume_abort_if_not(var_1_12 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_12 <= 126) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=7/2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L99] var_1_14 = __VERIFIER_nondet_float() [L100] CALL assume_abort_if_not((var_1_14 >= -922337.2036854765600e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not((var_1_14 >= -922337.2036854765600e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=4, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L101] var_1_16 = __VERIFIER_nondet_uchar() [L102] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L103] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=10000, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L104] var_1_18 = __VERIFIER_nondet_ushort() [L105] CALL assume_abort_if_not(var_1_18 >= 8192) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=8192, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_18 >= 8192) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=8192, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L106] CALL assume_abort_if_not(var_1_18 <= 16384) VAL [\old(cond)=1, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=8192, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_18 <= 16384) VAL [isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=8/5, var_1_14=2, var_1_15=8, var_1_16=2, var_1_17=2, var_1_18=8192, var_1_1=0, var_1_20=4, var_1_22=-32, var_1_23=0, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=64] [L121] RET updateVariables() [L122] CALL step() [L42] unsigned char stepLocal_1 = ! var_1_5; [L43] COND TRUE stepLocal_1 || (var_1_12 < last_1_var_1_15) [L44] COND FALSE !(! var_1_5) [L47] var_1_13 = var_1_14 [L50] COND FALSE !((127.35 + var_1_13) <= var_1_13) [L55] COND FALSE !((- var_1_13) > 31.9f) [L58] var_1_1 = var_1_5 [L60] COND TRUE \read(var_1_1) [L61] var_1_15 = var_1_16 [L63] var_1_22 = 1 [L64] var_1_23 = var_1_22 [L65] unsigned long int stepLocal_0 = var_1_23; [L66] COND TRUE var_1_15 > stepLocal_0 [L67] var_1_8 = ((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) [L69] unsigned char stepLocal_2 = var_1_23 < var_1_15; [L70] COND TRUE var_1_1 || stepLocal_2 [L71] var_1_17 = (var_1_15 + ((var_1_18 - var_1_16) + var_1_15)) [L75] signed long int stepLocal_3 = -10; [L76] COND FALSE !(((var_1_15 / var_1_18) * var_1_15) < stepLocal_3) [L79] COND FALSE !(! (var_1_17 <= var_1_17)) [L82] var_1_20 = var_1_12 [L122] RET step() [L123] CALL, EXPR property() [L112-L113] return ((((((((((- var_1_13) > 31.9f) ? (var_1_1 == ((unsigned char) ((var_1_6 || var_1_4) && var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) && (((127.35 + var_1_13) <= var_1_13) ? ((4.5 <= (var_1_13 * var_1_13)) ? (var_1_6 == ((unsigned char) var_1_5)) : 1) : 1)) && ((var_1_15 > var_1_23) ? (var_1_8 == ((signed char) ((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))))) : 1)) && (((! var_1_5) || (var_1_12 < last_1_var_1_15)) ? ((! var_1_5) ? (var_1_13 == ((float) var_1_14)) : (var_1_13 == ((float) var_1_14))) : 1)) && (var_1_1 ? (var_1_15 == ((unsigned char) var_1_16)) : 1)) && ((var_1_1 || (var_1_23 < var_1_15)) ? (var_1_17 == ((unsigned short int) (var_1_15 + ((var_1_18 - var_1_16) + var_1_15)))) : (var_1_17 == ((unsigned short int) (var_1_16 + var_1_18))))) && ((((var_1_15 / var_1_18) * var_1_15) < -10) ? (var_1_20 == ((signed short int) ((((var_1_15) > (var_1_16)) ? (var_1_15) : (var_1_16))))) : ((! (var_1_17 <= var_1_17)) ? (var_1_20 == ((signed short int) var_1_11)) : (var_1_20 == ((signed short int) var_1_12))))) && (var_1_22 == ((signed char) 1))) && (var_1_23 == ((unsigned long int) var_1_22)) ; [L123] RET, EXPR property() [L123] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=2, var_1_14=2, var_1_15=2, var_1_16=2, var_1_17=8194, var_1_18=8192, var_1_1=1, var_1_20=7, var_1_22=1, var_1_23=1, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=7] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_15=8, var_1_11=7, var_1_12=7, var_1_13=2, var_1_14=2, var_1_15=2, var_1_16=2, var_1_17=8194, var_1_18=8192, var_1_1=1, var_1_20=7, var_1_22=1, var_1_23=1, var_1_4=1, var_1_5=1, var_1_6=0, var_1_8=7] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 13, 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=29occurred 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 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 05:22:03,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 a34563caff72f9866734a8c4a4a8c9466c16382116556c064cc74473d1c9ecfd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:06,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:06,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:22:06,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:06,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:06,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:06,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:06,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:06,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:06,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:06,610 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:06,611 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:06,611 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:06,613 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:06,613 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:06,614 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:06,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:06,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:22:06,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:06,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:06,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:06,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:22:06,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:06,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:22:06,620 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:22:06,620 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:22:06,621 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:22:06,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:06,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:22:06,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:06,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:06,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:22:06,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:06,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:06,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:06,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:06,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:22:06,626 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:22:06,627 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:06,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:22:06,628 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:06,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:06,629 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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a34563caff72f9866734a8c4a4a8c9466c16382116556c064cc74473d1c9ecfd [2023-11-19 05:22:07,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:07,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:07,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:07,132 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:07,132 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:07,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i [2023-11-19 05:22:10,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:10,550 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:10,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i [2023-11-19 05:22:10,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data/35fc34006/08abc710bd93470f96af2cc32b37d321/FLAGcaabc389d [2023-11-19 05:22:10,575 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/data/35fc34006/08abc710bd93470f96af2cc32b37d321 [2023-11-19 05:22:10,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:10,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:10,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:10,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:10,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:10,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:10,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57807efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10, skipping insertion in model container [2023-11-19 05:22:10,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:10,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:10,800 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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i[915,928] [2023-11-19 05:22:10,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:10,900 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:10,913 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_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-41.i[915,928] [2023-11-19 05:22:10,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:10,971 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:10,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10 WrapperNode [2023-11-19 05:22:10,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:10,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:10,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:10,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:10,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,072 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-19 05:22:11,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:11,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:11,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:11,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:11,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:11,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:11,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:11,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:11,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (1/1) ... [2023-11-19 05:22:11,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:11,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:11,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:11,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:22:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:22:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:22:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:11,317 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:11,319 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:16,256 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:16,266 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:16,267 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:22:16,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:16 BoogieIcfgContainer [2023-11-19 05:22:16,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:16,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:16,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:16,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:16,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:10" (1/3) ... [2023-11-19 05:22:16,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238710ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:16, skipping insertion in model container [2023-11-19 05:22:16,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10" (2/3) ... [2023-11-19 05:22:16,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238710ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:16, skipping insertion in model container [2023-11-19 05:22:16,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:16" (3/3) ... [2023-11-19 05:22:16,283 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-41.i [2023-11-19 05:22:16,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:16,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:22:16,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:16,370 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;@3fc28554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:16,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:22:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:22:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 05:22:16,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:16,390 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:16,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:16,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash -657822016, now seen corresponding path program 1 times [2023-11-19 05:22:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:16,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725606172] [2023-11-19 05:22:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:16,415 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 05:22:16,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:16,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:16,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:16,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:22:16,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-19 05:22:16,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:16,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:16,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725606172] [2023-11-19 05:22:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725606172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:16,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:22:16,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733596435] [2023-11-19 05:22:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:16,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:22:16,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:22:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:22:17,023 INFO L87 Difference]: Start difference. First operand has 53 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:17,090 INFO L93 Difference]: Finished difference Result 103 states and 166 transitions. [2023-11-19 05:22:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:22:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2023-11-19 05:22:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:17,106 INFO L225 Difference]: With dead ends: 103 [2023-11-19 05:22:17,107 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 05:22:17,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 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 05:22:17,120 INFO L413 NwaCegarLoop]: 74 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, 74 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 05:22:17,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:22:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 05:22:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-19 05:22:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:22:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 70 transitions. [2023-11-19 05:22:17,189 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 70 transitions. Word has length 91 [2023-11-19 05:22:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:17,191 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 70 transitions. [2023-11-19 05:22:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 70 transitions. [2023-11-19 05:22:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 05:22:17,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:17,201 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:17,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:17,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:17,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1146824830, now seen corresponding path program 1 times [2023-11-19 05:22:17,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934173577] [2023-11-19 05:22:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:17,424 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 05:22:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:17,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:17,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:17,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:22:17,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 05:22:18,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:18,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:18,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934173577] [2023-11-19 05:22:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934173577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:18,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:18,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:22:18,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179178571] [2023-11-19 05:22:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:18,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:22:18,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:22:18,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:22:18,465 INFO L87 Difference]: Start difference. First operand 49 states and 70 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:21,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:22,054 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2023-11-19 05:22:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:22:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2023-11-19 05:22:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:22,084 INFO L225 Difference]: With dead ends: 105 [2023-11-19 05:22:22,085 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 05:22:22,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:22:22,088 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 50 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:22,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 197 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-11-19 05:22:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 05:22:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-11-19 05:22:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:22:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2023-11-19 05:22:22,109 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 91 [2023-11-19 05:22:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2023-11-19 05:22:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:22:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2023-11-19 05:22:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 05:22:22,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:22,114 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:22,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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)] Ended with exit code 0 [2023-11-19 05:22:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:22,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:22,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1247180200, now seen corresponding path program 1 times [2023-11-19 05:22:22,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:22,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331120583] [2023-11-19 05:22:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:22,334 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 05:22:22,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:22,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:22,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4f16d8d-9ef6-401a-9718-07f7b2ebdb9b/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 05:22:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:23,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 05:22:23,023 INFO L285 TraceCheckSpWp]: Computing forward predicates...