./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:38,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:38,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:36:38,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:38,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:38,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:38,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:38,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:38,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:38,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:38,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:38,188 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:38,189 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:38,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:38,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:38,190 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:38,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:38,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:38,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:38,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:38,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:38,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:38,194 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:38,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:38,195 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:38,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:38,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:38,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:38,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:38,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:38,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:38,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:38,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:38,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:38,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:38,199 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:38,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:38,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:38,199 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:38,200 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_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2023-11-19 07:36:38,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:38,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:38,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:38,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:38,512 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:38,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2023-11-19 07:36:41,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:42,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:42,070 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2023-11-19 07:36:42,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data/7df5c3432/bede7e200775487a943a004e9322a1aa/FLAG4f1b6bbf6 [2023-11-19 07:36:42,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data/7df5c3432/bede7e200775487a943a004e9322a1aa [2023-11-19 07:36:42,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:42,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:42,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:42,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:42,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:42,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1968e5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42, skipping insertion in model container [2023-11-19 07:36:42,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:42,315 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_dec7b6ed-a624-442f-a11b-2401d7a5fc71/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2023-11-19 07:36:42,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:42,347 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:42,359 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_dec7b6ed-a624-442f-a11b-2401d7a5fc71/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2023-11-19 07:36:42,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:42,383 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:42,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42 WrapperNode [2023-11-19 07:36:42,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:42,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:42,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:42,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:42,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,425 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2023-11-19 07:36:42,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:42,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:42,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:42,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:42,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:42,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:42,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:42,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:42,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:42,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:42,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:36:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:36:42,663 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:42,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:42,878 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:42,887 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:42,887 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:36:42,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:42 BoogieIcfgContainer [2023-11-19 07:36:42,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:42,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:42,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:42,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:42,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:42" (1/3) ... [2023-11-19 07:36:42,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a244a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:42, skipping insertion in model container [2023-11-19 07:36:42,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (2/3) ... [2023-11-19 07:36:42,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a244a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:42, skipping insertion in model container [2023-11-19 07:36:42,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:42" (3/3) ... [2023-11-19 07:36:42,905 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2023-11-19 07:36:42,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:42,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:36:43,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:43,014 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27bf35ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:43,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:36:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:36:43,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:43,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:43,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2023-11-19 07:36:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336852259] [2023-11-19 07:36:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336852259] [2023-11-19 07:36:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336852259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095178971] [2023-11-19 07:36:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:43,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:43,365 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:43,384 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-11-19 07:36:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:36:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:43,393 INFO L225 Difference]: With dead ends: 32 [2023-11-19 07:36:43,394 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 07:36:43,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:43,401 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:43,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 07:36:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 07:36:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-19 07:36:43,441 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-11-19 07:36:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:43,442 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-19 07:36:43,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-19 07:36:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:36:43,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:43,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:43,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2023-11-19 07:36:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284112120] [2023-11-19 07:36:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:43,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284112120] [2023-11-19 07:36:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284112120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110141479] [2023-11-19 07:36:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:43,702 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:43,775 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-19 07:36:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:36:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:43,778 INFO L225 Difference]: With dead ends: 22 [2023-11-19 07:36:43,778 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 07:36:43,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:43,788 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:43,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:43,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 07:36:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-19 07:36:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-19 07:36:43,806 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-11-19 07:36:43,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:43,806 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-19 07:36:43,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 07:36:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:36:43,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:43,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:43,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2023-11-19 07:36:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004551006] [2023-11-19 07:36:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:43,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:43,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:43,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:43,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:36:43,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:43,871 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:36:43,875 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:36:43,891 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post5 could not be translated [2023-11-19 07:36:43,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:36:43 BoogieIcfgContainer [2023-11-19 07:36:43,902 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:36:43,903 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:36:43,903 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:36:43,903 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:36:43,904 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:42" (3/4) ... [2023-11-19 07:36:43,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:36:43,909 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:36:43,910 INFO L158 Benchmark]: Toolchain (without parser) took 1811.25ms. Allocated memory is still 155.2MB. Free memory was 125.5MB in the beginning and 119.7MB in the end (delta: 5.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2023-11-19 07:36:43,910 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 113.2MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:43,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.75ms. Allocated memory is still 155.2MB. Free memory was 125.5MB in the beginning and 114.6MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:36:43,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.19ms. Allocated memory is still 155.2MB. Free memory was 114.6MB in the beginning and 113.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:36:43,912 INFO L158 Benchmark]: Boogie Preprocessor took 34.29ms. Allocated memory is still 155.2MB. Free memory was 113.3MB in the beginning and 112.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:43,913 INFO L158 Benchmark]: RCFGBuilder took 431.17ms. Allocated memory is still 155.2MB. Free memory was 112.1MB in the beginning and 102.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:36:43,913 INFO L158 Benchmark]: TraceAbstraction took 1005.88ms. Allocated memory is still 155.2MB. Free memory was 102.4MB in the beginning and 120.3MB in the end (delta: -18.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:43,914 INFO L158 Benchmark]: Witness Printer took 6.19ms. Allocated memory is still 155.2MB. Free memory was 120.3MB in the beginning and 119.7MB in the end (delta: 684.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:43,917 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 113.2MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.75ms. Allocated memory is still 155.2MB. Free memory was 125.5MB in the beginning and 114.6MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.19ms. Allocated memory is still 155.2MB. Free memory was 114.6MB in the beginning and 113.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.29ms. Allocated memory is still 155.2MB. Free memory was 113.3MB in the beginning and 112.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 431.17ms. Allocated memory is still 155.2MB. Free memory was 112.1MB in the beginning and 102.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1005.88ms. Allocated memory is still 155.2MB. Free memory was 102.4MB in the beginning and 120.3MB in the end (delta: -18.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.19ms. Allocated memory is still 155.2MB. Free memory was 120.3MB in the beginning and 119.7MB in the end (delta: 684.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, r=0] [L32] COND TRUE counter++<1 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:36:43,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:47,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:47,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:36:47,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:47,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:47,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:47,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:47,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:47,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:47,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:47,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:47,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:47,346 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:47,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:47,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:47,350 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:47,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:47,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:47,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:47,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:47,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:47,353 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:36:47,353 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:36:47,354 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:36:47,354 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:47,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:47,355 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:47,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:47,356 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:47,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:47,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:47,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:47,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:47,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:47,359 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:36:47,359 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:36:47,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:47,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:47,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:47,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:47,361 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:36:47,362 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:47,362 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_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2023-11-19 07:36:47,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:47,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:47,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:47,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:47,826 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:47,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2023-11-19 07:36:51,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:51,329 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:51,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2023-11-19 07:36:51,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data/eded19c6c/f5ec024d351f47f980779038eae262ca/FLAGf3db9590e [2023-11-19 07:36:51,354 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/data/eded19c6c/f5ec024d351f47f980779038eae262ca [2023-11-19 07:36:51,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:51,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:51,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:51,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:51,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:51,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd6a6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51, skipping insertion in model container [2023-11-19 07:36:51,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:51,546 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_dec7b6ed-a624-442f-a11b-2401d7a5fc71/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2023-11-19 07:36:51,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:51,589 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:51,607 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_dec7b6ed-a624-442f-a11b-2401d7a5fc71/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2023-11-19 07:36:51,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:51,657 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:51,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51 WrapperNode [2023-11-19 07:36:51,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:51,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:51,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:51,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:51,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,729 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-11-19 07:36:51,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:51,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:51,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:51,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:51,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:51,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:51,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:51,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:51,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (1/1) ... [2023-11-19 07:36:51,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:51,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:51,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:51,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:36:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:36:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:36:51,976 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:51,979 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:53,507 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:53,514 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:53,514 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:36:53,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53 BoogieIcfgContainer [2023-11-19 07:36:53,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:53,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:53,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:53,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:53,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:51" (1/3) ... [2023-11-19 07:36:53,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cc7f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:53, skipping insertion in model container [2023-11-19 07:36:53,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:51" (2/3) ... [2023-11-19 07:36:53,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cc7f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:53, skipping insertion in model container [2023-11-19 07:36:53,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53" (3/3) ... [2023-11-19 07:36:53,527 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2023-11-19 07:36:53,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:53,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:36:53,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:53,605 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a2756ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:53,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:36:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:36:53,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:53,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:53,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:53,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2023-11-19 07:36:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:36:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096666250] [2023-11-19 07:36:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:53,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:36:53,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:36:53,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:36:53,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:36:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:36:54,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:54,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:54,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:36:54,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096666250] [2023-11-19 07:36:54,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096666250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:54,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:54,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:54,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585017146] [2023-11-19 07:36:54,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:36:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:54,327 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:54,349 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-11-19 07:36:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:54,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:36:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:54,360 INFO L225 Difference]: With dead ends: 32 [2023-11-19 07:36:54,360 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 07:36:54,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:54,369 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:54,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 07:36:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 07:36:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-19 07:36:54,414 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-11-19 07:36:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:54,415 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-19 07:36:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-19 07:36:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:36:54,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:54,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:54,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:36:54,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:54,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2023-11-19 07:36:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:36:54,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83349805] [2023-11-19 07:36:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:36:54,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:36:54,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:36:54,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:36:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:55,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:55,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:55,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:55,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:36:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83349805] [2023-11-19 07:36:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83349805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893396935] [2023-11-19 07:36:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:55,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:36:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:55,187 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:55,898 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-19 07:36:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:55,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:36:55,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:55,900 INFO L225 Difference]: With dead ends: 22 [2023-11-19 07:36:55,900 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 07:36:55,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:55,902 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:55,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:36:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 07:36:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-19 07:36:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-19 07:36:55,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2023-11-19 07:36:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:55,911 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-19 07:36:55,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 07:36:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:36:55,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:55,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:55,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:56,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:36:56,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:56,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2023-11-19 07:36:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:36:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205831220] [2023-11-19 07:36:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:36:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:36:56,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:36:56,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:36:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:56,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:56,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-19 07:36:56,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [279413122] [2023-11-19 07:36:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 07:36:56,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/cvc4 [2023-11-19 07:36:56,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 07:36:56,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec7b6ed-a624-442f-a11b-2401d7a5fc71/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-19 07:36:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:57,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat