./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:55:13,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:55:13,361 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:55:13,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:55:13,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:55:13,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:55:13,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:55:13,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:55:13,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:55:13,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:55:13,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:55:13,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:55:13,432 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:55:13,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:55:13,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:55:13,435 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:55:13,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:55:13,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:55:13,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:55:13,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:55:13,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:55:13,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:55:13,439 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:55:13,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:55:13,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:55:13,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:55:13,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:55:13,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:55:13,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:13,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:55:13,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:55:13,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:55:13,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:55:13,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:55:13,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:55:13,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:55:13,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:55:13,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:55:13,462 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:55:13,463 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 [2023-11-06 21:55:13,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:55:13,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:55:13,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:55:13,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:55:13,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:55:13,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-06 21:55:17,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:17,816 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:17,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-06 21:55:17,829 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data/5e8bdfdd6/fb0427e998c24c02b42ac09709a7ce70/FLAG85e50d388 [2023-11-06 21:55:17,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data/5e8bdfdd6/fb0427e998c24c02b42ac09709a7ce70 [2023-11-06 21:55:17,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:17,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:17,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:17,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:17,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:17,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:17" (1/1) ... [2023-11-06 21:55:17,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c57b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:17, skipping insertion in model container [2023-11-06 21:55:17,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:17" (1/1) ... [2023-11-06 21:55:17,933 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:18,148 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_94252c86-a07f-49d5-8e16-84686e142042/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-06 21:55:18,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:18,217 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:55:18,234 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_94252c86-a07f-49d5-8e16-84686e142042/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-06 21:55:18,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:18,283 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:55:18,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18 WrapperNode [2023-11-06 21:55:18,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:18,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:18,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:55:18,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:55:18,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,353 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 92 [2023-11-06 21:55:18,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:18,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:55:18,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:55:18,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:55:18,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:55:18,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:55:18,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:55:18,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:55:18,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (1/1) ... [2023-11-06 21:55:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:18,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:18,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:55:18,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:55:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:55:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:55:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:55:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:55:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:55:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:55:18,674 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:55:18,678 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:55:19,198 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:55:19,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:55:19,206 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:55:19,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:19 BoogieIcfgContainer [2023-11-06 21:55:19,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:55:19,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:55:19,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:55:19,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:55:19,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:17" (1/3) ... [2023-11-06 21:55:19,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e4190f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:19, skipping insertion in model container [2023-11-06 21:55:19,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:18" (2/3) ... [2023-11-06 21:55:19,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e4190f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:19, skipping insertion in model container [2023-11-06 21:55:19,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:19" (3/3) ... [2023-11-06 21:55:19,221 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-06 21:55:19,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:55:19,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:55:19,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:19,339 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1d78e0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:19,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:55:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 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) [2023-11-06 21:55:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:55:19,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:19,364 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] [2023-11-06 21:55:19,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:19,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1224453743, now seen corresponding path program 1 times [2023-11-06 21:55:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707581301] [2023-11-06 21:55:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:19,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:55:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763172042] [2023-11-06 21:55:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:19,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:19,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:19,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:55:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:55:19,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:55:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:55:20,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:55:20,016 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:55:20,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:55:20,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:20,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 21:55:20,235 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 21:55:20,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:55:20,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:55:20 BoogieIcfgContainer [2023-11-06 21:55:20,325 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:55:20,326 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:55:20,326 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:55:20,327 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:55:20,327 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:19" (3/4) ... [2023-11-06 21:55:20,331 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:55:20,332 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:55:20,334 INFO L158 Benchmark]: Toolchain (without parser) took 2470.88ms. Allocated memory is still 182.5MB. Free memory was 153.1MB in the beginning and 113.5MB in the end (delta: 39.6MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,335 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 127.9MB. Free memory is still 99.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:55:20,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.97ms. Allocated memory is still 182.5MB. Free memory was 153.1MB in the beginning and 141.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.39ms. Allocated memory is still 182.5MB. Free memory was 141.4MB in the beginning and 139.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,337 INFO L158 Benchmark]: Boogie Preprocessor took 40.33ms. Allocated memory is still 182.5MB. Free memory was 139.3MB in the beginning and 137.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,338 INFO L158 Benchmark]: RCFGBuilder took 813.64ms. Allocated memory is still 182.5MB. Free memory was 137.5MB in the beginning and 143.7MB in the end (delta: -6.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,339 INFO L158 Benchmark]: TraceAbstraction took 1113.15ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 114.4MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,340 INFO L158 Benchmark]: Witness Printer took 6.14ms. Allocated memory is still 182.5MB. Free memory was 114.4MB in the beginning and 113.5MB in the end (delta: 903.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:55:20,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 127.9MB. Free memory is still 99.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.97ms. Allocated memory is still 182.5MB. Free memory was 153.1MB in the beginning and 141.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.39ms. Allocated memory is still 182.5MB. Free memory was 141.4MB in the beginning and 139.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.33ms. Allocated memory is still 182.5MB. Free memory was 139.3MB in the beginning and 137.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 813.64ms. Allocated memory is still 182.5MB. Free memory was 137.5MB in the beginning and 143.7MB in the end (delta: -6.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1113.15ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 114.4MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 6.14ms. Allocated memory is still 182.5MB. Free memory was 114.4MB in the beginning and 113.5MB in the end (delta: 903.7kB). Peak memory consumption was 2.1MB. 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 82. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 64; [L23] unsigned char var_1_2 = 0; [L24] signed short int var_1_5 = 8; [L25] signed short int var_1_6 = -32; [L26] unsigned char var_1_7 = 100; [L27] signed long int var_1_8 = 32; [L28] float var_1_10 = 255.3; [L29] float var_1_13 = 2.8; [L30] signed long int last_1_var_1_8 = 32; VAL [isInitial=0, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L86] isInitial = 1 [L87] FCALL initially() [L88] int k_loop; [L89] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L89] COND TRUE k_loop < 1 [L90] CALL updateLastVariables() [L79] last_1_var_1_8 = var_1_8 VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L90] RET updateLastVariables() [L91] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L62] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L63] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L63] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L64] var_1_5 = __VERIFIER_nondet_short() [L65] CALL assume_abort_if_not(var_1_5 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L65] RET assume_abort_if_not(var_1_5 >= -32768) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L66] CALL assume_abort_if_not(var_1_5 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L66] RET assume_abort_if_not(var_1_5 <= 32767) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L67] CALL assume_abort_if_not(var_1_5 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L67] RET assume_abort_if_not(var_1_5 != 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=-32, var_1_7=100, var_1_8=32] [L68] var_1_6 = __VERIFIER_nondet_short() [L69] CALL assume_abort_if_not(var_1_6 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L69] RET assume_abort_if_not(var_1_6 >= -32768) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L70] CALL assume_abort_if_not(var_1_6 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L70] RET assume_abort_if_not(var_1_6 <= 32767) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L71] CALL assume_abort_if_not(var_1_6 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L71] RET assume_abort_if_not(var_1_6 != 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=100, var_1_8=32] [L72] var_1_7 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L73] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L74] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L74] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L75] var_1_13 = __VERIFIER_nondet_float() [L76] CALL assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=2, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=2, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L76] RET assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=2, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L91] RET updateVariables() [L92] CALL step() [L34] signed long int stepLocal_0 = (last_1_var_1_8 / var_1_5) % var_1_6; VAL [isInitial=1, last_1_var_1_8=32, stepLocal_0=0, var_1_10=2553/10, var_1_13=2, var_1_1=64, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L35] COND FALSE !(\read(var_1_2)) [L40] var_1_1 = var_1_7 VAL [isInitial=1, last_1_var_1_8=32, stepLocal_0=0, var_1_10=2553/10, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L42] unsigned char stepLocal_1 = var_1_1; VAL [isInitial=1, last_1_var_1_8=32, stepLocal_0=0, stepLocal_1=0, var_1_10=2553/10, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=32] [L43] COND FALSE !(stepLocal_1 < var_1_5) [L46] var_1_8 = var_1_7 VAL [isInitial=1, last_1_var_1_8=32, stepLocal_0=0, stepLocal_1=0, var_1_10=2553/10, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=0] [L48] COND TRUE ((var_1_6 * var_1_8) * var_1_7) <= (var_1_8 - var_1_1) VAL [isInitial=1, last_1_var_1_8=32, stepLocal_0=0, stepLocal_1=0, var_1_10=2553/10, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=0] [L49] COND TRUE var_1_5 <= (var_1_8 + var_1_8) [L50] var_1_10 = var_1_13 VAL [isInitial=1, last_1_var_1_8=32, stepLocal_0=0, stepLocal_1=0, var_1_10=2, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=0] [L92] RET step() [L93] CALL, EXPR property() [L82-L83] return ((var_1_2 ? ((last_1_var_1_8 > ((last_1_var_1_8 / var_1_5) % var_1_6)) ? (var_1_1 == ((unsigned char) var_1_7)) : 1) : (var_1_1 == ((unsigned char) var_1_7))) && ((var_1_1 < var_1_5) ? (var_1_8 == ((signed long int) (var_1_1 - ((((var_1_7) < (var_1_1)) ? (var_1_7) : (var_1_1)))))) : (var_1_8 == ((signed long int) var_1_7)))) && ((((var_1_6 * var_1_8) * var_1_7) <= (var_1_8 - var_1_1)) ? ((var_1_5 <= (var_1_8 + var_1_8)) ? (var_1_10 == ((float) var_1_13)) : 1) : ((var_1_1 >= var_1_1) ? (var_1_10 == ((float) var_1_13)) : (var_1_10 == ((float) var_1_13)))) ; VAL [\result=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=0] [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=0, var_1_2=0, var_1_5=-34, var_1_6=3, var_1_7=0, var_1_8=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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=43occurred 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, 74 NumberOfCodeBlocks, 74 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 [2023-11-06 21:55:20,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:55:23,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:55:23,837 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 21:55:23,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:55:23,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:55:23,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:55:23,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:55:23,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:55:23,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:55:23,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:55:23,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:55:23,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:55:23,925 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:55:23,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:55:23,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:55:23,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:55:23,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:55:23,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:55:23,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:55:23,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:55:23,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:55:23,932 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:55:23,933 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:55:23,933 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:55:23,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:55:23,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:55:23,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:55:23,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:55:23,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:55:23,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:55:23,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:23,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:55:23,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:55:23,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:55:23,940 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:55:23,940 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:55:23,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:55:23,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:55:23,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:55:23,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:55:23,943 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:55:23,943 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:55:23,943 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 [2023-11-06 21:55:24,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:55:24,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:55:24,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:55:24,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:55:24,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:55:24,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-06 21:55:28,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:28,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:28,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-06 21:55:28,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data/c2aed2521/e5b7a327e3d841b3ad13b158bd7bf7e6/FLAGadf937c89 [2023-11-06 21:55:28,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/data/c2aed2521/e5b7a327e3d841b3ad13b158bd7bf7e6 [2023-11-06 21:55:28,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:28,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:28,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:28,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:28,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:28,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:28" (1/1) ... [2023-11-06 21:55:28,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a4b1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:28, skipping insertion in model container [2023-11-06 21:55:28,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:28" (1/1) ... [2023-11-06 21:55:28,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:28,889 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_94252c86-a07f-49d5-8e16-84686e142042/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-06 21:55:28,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:28,959 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:55:28,976 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_94252c86-a07f-49d5-8e16-84686e142042/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-06 21:55:28,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:29,025 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:55:29,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29 WrapperNode [2023-11-06 21:55:29,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:29,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:29,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:55:29,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:55:29,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,127 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-11-06 21:55:29,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:29,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:55:29,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:55:29,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:55:29,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:55:29,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:55:29,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:55:29,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:55:29,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2023-11-06 21:55:29,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:29,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:55:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:55:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:55:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:55:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:55:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:55:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:55:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:55:29,476 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:55:29,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:55:31,870 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:55:31,884 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:55:31,885 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:55:31,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:31 BoogieIcfgContainer [2023-11-06 21:55:31,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:55:31,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:55:31,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:55:31,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:55:31,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:28" (1/3) ... [2023-11-06 21:55:31,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4174f6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:31, skipping insertion in model container [2023-11-06 21:55:31,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (2/3) ... [2023-11-06 21:55:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4174f6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:31, skipping insertion in model container [2023-11-06 21:55:31,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:31" (3/3) ... [2023-11-06 21:55:31,904 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-06 21:55:31,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:55:31,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:55:31,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:31,987 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4e6f1e0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:31,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:55:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 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) [2023-11-06 21:55:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:55:32,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:32,009 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] [2023-11-06 21:55:32,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:32,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1224453743, now seen corresponding path program 1 times [2023-11-06 21:55:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:32,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058237105] [2023-11-06 21:55:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:32,038 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 [2023-11-06 21:55:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:32,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:55:32,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:55:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:32,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:55:32,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:45,626 WARN L293 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 21:55:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-06 21:55:59,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:59,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058237105] [2023-11-06 21:55:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058237105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:59,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:55:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613602283] [2023-11-06 21:55:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:59,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:55:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:55:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:55:59,308 INFO L87 Difference]: Start difference. First operand has 43 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 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 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 21:56:27,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:34,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:47,128 INFO L93 Difference]: Finished difference Result 169 states and 267 transitions. [2023-11-06 21:56:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 21:56:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 74 [2023-11-06 21:56:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:47,167 INFO L225 Difference]: With dead ends: 169 [2023-11-06 21:56:47,168 INFO L226 Difference]: Without dead ends: 113 [2023-11-06 21:56:47,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 21:56:47,176 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 234 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:47,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 305 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 38.3s Time] [2023-11-06 21:56:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-06 21:56:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 50. [2023-11-06 21:56:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 21:56:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2023-11-06 21:56:47,228 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 74 [2023-11-06 21:56:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:47,229 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2023-11-06 21:56:47,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 21:56:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2023-11-06 21:56:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:56:47,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:47,234 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] [2023-11-06 21:56:47,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:56:47,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:56:47,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:47,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -988032367, now seen corresponding path program 1 times [2023-11-06 21:56:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292450223] [2023-11-06 21:56:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:47,443 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 [2023-11-06 21:56:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:47,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:56:47,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:56:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:47,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:56:47,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-06 21:57:04,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:04,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292450223] [2023-11-06 21:57:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292450223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:04,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:04,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:57:04,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880334942] [2023-11-06 21:57:04,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:57:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:57:04,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:57:04,761 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 21:57:24,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:58:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:00,231 INFO L93 Difference]: Finished difference Result 113 states and 151 transitions. [2023-11-06 21:58:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 21:58:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 74 [2023-11-06 21:58:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:00,263 INFO L225 Difference]: With dead ends: 113 [2023-11-06 21:58:00,263 INFO L226 Difference]: Without dead ends: 111 [2023-11-06 21:58:00,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 21:58:00,265 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 181 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:00,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 273 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 39.5s Time] [2023-11-06 21:58:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-06 21:58:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 51. [2023-11-06 21:58:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 21:58:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2023-11-06 21:58:00,283 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 74 [2023-11-06 21:58:00,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:00,284 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2023-11-06 21:58:00,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 21:58:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2023-11-06 21:58:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:58:00,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:00,286 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] [2023-11-06 21:58:00,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:00,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:00,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:00,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1295506191, now seen corresponding path program 1 times [2023-11-06 21:58:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062730614] [2023-11-06 21:58:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:00,502 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 [2023-11-06 21:58:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:00,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:00,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:00,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:58:00,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 114 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 21:58:03,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-06 21:58:14,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062730614] [2023-11-06 21:58:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062730614] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:58:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-06 21:58:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761309892] [2023-11-06 21:58:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:58:14,704 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2023-11-06 21:58:16,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:28,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:39,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:41,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:47,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:48,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:50,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:58:51,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:59:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:01,557 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2023-11-06 21:59:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 [2023-11-06 21:59:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:01,571 INFO L225 Difference]: With dead ends: 171 [2023-11-06 21:59:01,571 INFO L226 Difference]: Without dead ends: 123 [2023-11-06 21:59:01,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2023-11-06 21:59:01,574 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 73 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:01,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 158 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 3 Unknown, 0 Unchecked, 40.0s Time] [2023-11-06 21:59:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-06 21:59:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 71. [2023-11-06 21:59:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 55 states have internal predecessors, (67), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:59:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-11-06 21:59:01,614 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 74 [2023-11-06 21:59:01,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:01,615 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-11-06 21:59:01,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2023-11-06 21:59:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-11-06 21:59:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:59:01,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:01,618 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] [2023-11-06 21:59:01,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:01,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:59:01,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:01,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:01,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1297353233, now seen corresponding path program 1 times [2023-11-06 21:59:01,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:59:01,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61015611] [2023-11-06 21:59:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:01,838 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 [2023-11-06 21:59:01,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:59:01,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:59:01,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94252c86-a07f-49d5-8e16-84686e142042/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 21:59:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:02,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:59:02,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-06 21:59:07,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:07,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:59:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61015611] [2023-11-06 21:59:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61015611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:07,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:07,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:59:07,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907987283] [2023-11-06 21:59:07,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:07,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:59:07,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:59:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:59:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:59:07,063 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2023-11-06 21:59:15,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:59:31,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []