./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl --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 fa05e78fe0e0f33a03e9219e44c3e741a6c5e7a079383cf31cbd90724515faa0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:25,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:25,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:22:25,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:25,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:25,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:25,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:25,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:25,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:25,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:25,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:25,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:25,899 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:25,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:25,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:22:25,901 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:25,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:25,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:25,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:25,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:22:25,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:25,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:22:25,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:25,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:22:25,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:25,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:25,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:25,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:25,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:25,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:25,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:25,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:22:25,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:25,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:25,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:25,913 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:22:25,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:25,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:25,914 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:25,915 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_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa05e78fe0e0f33a03e9219e44c3e741a6c5e7a079383cf31cbd90724515faa0 [2023-11-12 02:22:26,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:26,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:26,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:26,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:26,235 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:26,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-59.i [2023-11-12 02:22:29,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:29,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:29,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-59.i [2023-11-12 02:22:29,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/data/43c6aa8a3/62209783c6554ef6926c821e97d7d897/FLAG4b9094df4 [2023-11-12 02:22:29,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/data/43c6aa8a3/62209783c6554ef6926c821e97d7d897 [2023-11-12 02:22:29,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:29,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:29,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:29,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:29,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:29,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:29" (1/1) ... [2023-11-12 02:22:29,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6677b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:29, skipping insertion in model container [2023-11-12 02:22:29,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:29" (1/1) ... [2023-11-12 02:22:29,994 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:30,160 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-59.i[915,928] [2023-11-12 02:22:30,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:30,249 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:30,260 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_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-59.i[915,928] [2023-11-12 02:22:30,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:30,336 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:30,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30 WrapperNode [2023-11-12 02:22:30,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:30,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:30,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:30,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:30,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,414 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2023-11-12 02:22:30,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:30,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:30,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:30,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:30,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:30,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:30,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:30,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:30,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (1/1) ... [2023-11-12 02:22:30,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:30,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:30,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:30,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:22:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:22:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:30,683 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:30,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:31,165 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:31,207 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:31,207 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:22:31,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:31 BoogieIcfgContainer [2023-11-12 02:22:31,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:31,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:31,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:31,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:31,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:29" (1/3) ... [2023-11-12 02:22:31,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66283b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:31, skipping insertion in model container [2023-11-12 02:22:31,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:30" (2/3) ... [2023-11-12 02:22:31,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66283b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:31, skipping insertion in model container [2023-11-12 02:22:31,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:31" (3/3) ... [2023-11-12 02:22:31,227 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-59.i [2023-11-12 02:22:31,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:31,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:22:31,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:31,365 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;@3ea59fe8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:31,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:22:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 02:22:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:22:31,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:31,386 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:31,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:31,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash -353878858, now seen corresponding path program 1 times [2023-11-12 02:22:31,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488647614] [2023-11-12 02:22:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:31,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488647614] [2023-11-12 02:22:31,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:22:31,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184695772] [2023-11-12 02:22:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:31,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:31,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:22:31,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-12 02:22:31,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:31,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184695772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:31,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:31,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:31,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007074402] [2023-11-12 02:22:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:22:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:22:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:22:32,045 INFO L87 Difference]: Start difference. First operand has 55 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-12 02:22:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:32,083 INFO L93 Difference]: Finished difference Result 107 states and 173 transitions. [2023-11-12 02:22:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:22:32,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2023-11-12 02:22:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:32,106 INFO L225 Difference]: With dead ends: 107 [2023-11-12 02:22:32,107 INFO L226 Difference]: Without dead ends: 51 [2023-11-12 02:22:32,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:22:32,118 INFO L413 NwaCegarLoop]: 78 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, 78 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 [2023-11-12 02:22:32,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:22:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-12 02:22:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-12 02:22:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 02:22:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2023-11-12 02:22:32,175 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 95 [2023-11-12 02:22:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:32,176 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2023-11-12 02:22:32,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-12 02:22:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2023-11-12 02:22:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:22:32,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:32,182 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:32,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:22:32,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:32,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:32,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash -281892498, now seen corresponding path program 1 times [2023-11-12 02:22:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:32,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113453422] [2023-11-12 02:22:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:32,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886913865] [2023-11-12 02:22:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:32,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:22:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:32,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:22:32,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-12 02:22:32,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113453422] [2023-11-12 02:22:32,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886913865] [2023-11-12 02:22:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886913865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:32,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:32,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:22:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328567054] [2023-11-12 02:22:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:32,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:32,988 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 02:22:33,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:33,160 INFO L93 Difference]: Finished difference Result 148 states and 217 transitions. [2023-11-12 02:22:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:33,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-11-12 02:22:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:33,165 INFO L225 Difference]: With dead ends: 148 [2023-11-12 02:22:33,167 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 02:22:33,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:33,171 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 49 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:33,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 206 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:22:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 02:22:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2023-11-12 02:22:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:22:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 116 transitions. [2023-11-12 02:22:33,194 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 116 transitions. Word has length 95 [2023-11-12 02:22:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:33,195 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 116 transitions. [2023-11-12 02:22:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 02:22:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 116 transitions. [2023-11-12 02:22:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-12 02:22:33,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:33,198 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:33,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:33,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 02:22:33,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:33,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1450882923, now seen corresponding path program 1 times [2023-11-12 02:22:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511836700] [2023-11-12 02:22:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:33,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190756783] [2023-11-12 02:22:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:33,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:33,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:33,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:22:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:22:33,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-12 02:22:34,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511836700] [2023-11-12 02:22:34,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:34,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190756783] [2023-11-12 02:22:34,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190756783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:34,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:34,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:34,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006343499] [2023-11-12 02:22:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:34,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:34,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:34,163 INFO L87 Difference]: Start difference. First operand 80 states and 116 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 02:22:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:34,391 INFO L93 Difference]: Finished difference Result 187 states and 271 transitions. [2023-11-12 02:22:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2023-11-12 02:22:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:34,395 INFO L225 Difference]: With dead ends: 187 [2023-11-12 02:22:34,396 INFO L226 Difference]: Without dead ends: 139 [2023-11-12 02:22:34,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:22:34,398 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 114 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:34,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 236 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:22:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-12 02:22:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 126. [2023-11-12 02:22:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-12 02:22:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2023-11-12 02:22:34,431 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 96 [2023-11-12 02:22:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:34,431 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2023-11-12 02:22:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-12 02:22:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2023-11-12 02:22:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 02:22:34,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:34,434 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:34,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:34,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 02:22:34,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:34,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:34,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1646473475, now seen corresponding path program 1 times [2023-11-12 02:22:34,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:34,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762518480] [2023-11-12 02:22:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:34,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:34,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379946549] [2023-11-12 02:22:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:34,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:34,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:34,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8a23804-d991-4eb5-aa8a-b0f7478f83f1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:22:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:35,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-12 02:22:35,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 169 proven. 105 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 02:22:37,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:28,733 WARN L293 SmtUtils]: Spent 13.60s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)