./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.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_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/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_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/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_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/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 2b375ae29a973823eea93f22f40d893acb563fa864c4860e04525925a120d938 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:53,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:53,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:50:53,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:53,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:53,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:53,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:53,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:53,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:53,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:53,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:53,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:53,574 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:53,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:53,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:53,576 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:53,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:53,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:53,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:53,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:53,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:53,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:53,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:53,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:53,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:53,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:53,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:53,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:53,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:53,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:53,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:53,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:53,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:53,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:53,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:53,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:53,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:53,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:53,588 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:53,588 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_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b375ae29a973823eea93f22f40d893acb563fa864c4860e04525925a120d938 [2023-11-19 07:50:53,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:53,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:53,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:53,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:53,905 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:53,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c [2023-11-19 07:50:57,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:57,189 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:57,189 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c [2023-11-19 07:50:57,202 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/data/11862c232/29695519c977465d93e75566261b16ef/FLAGd64ddd28a [2023-11-19 07:50:57,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/data/11862c232/29695519c977465d93e75566261b16ef [2023-11-19 07:50:57,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:57,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:57,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:57,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:57,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:57,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9053326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57, skipping insertion in model container [2023-11-19 07:50:57,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:57,477 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_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c[987,1000] [2023-11-19 07:50:57,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:57,539 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:57,554 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_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c[987,1000] [2023-11-19 07:50:57,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:57,608 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:57,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57 WrapperNode [2023-11-19 07:50:57,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:57,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:57,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:57,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:57,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,675 INFO L138 Inliner]: procedures = 16, calls = 83, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2023-11-19 07:50:57,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:57,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:57,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:57,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:57,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:57,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:57,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:57,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:57,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (1/1) ... [2023-11-19 07:50:57,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:57,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:57,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:50:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:50:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:50:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:50:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2023-11-19 07:50:57,830 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2023-11-19 07:50:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:57,923 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:57,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:58,199 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:58,207 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:58,207 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:50:58,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:58 BoogieIcfgContainer [2023-11-19 07:50:58,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:58,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:58,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:58,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:58,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:57" (1/3) ... [2023-11-19 07:50:58,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4d5bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:58, skipping insertion in model container [2023-11-19 07:50:58,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:57" (2/3) ... [2023-11-19 07:50:58,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4d5bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:58, skipping insertion in model container [2023-11-19 07:50:58,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:58" (3/3) ... [2023-11-19 07:50:58,221 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps6-ll.c [2023-11-19 07:50:58,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:58,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:50:58,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:58,295 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;@72eaa3c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:58,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:50:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:50:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:50:58,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:58,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:58,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:58,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash -32009173, now seen corresponding path program 1 times [2023-11-19 07:50:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629180479] [2023-11-19 07:50:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:58,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:58,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629180479] [2023-11-19 07:50:58,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:50:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702747817] [2023-11-19 07:50:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:58,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:58,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:58,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:58,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:58,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:50:58,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:58,770 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 07:50:58,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702747817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:58,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:58,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148121406] [2023-11-19 07:50:58,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:58,825 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:58,855 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2023-11-19 07:50:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:58,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 07:50:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:58,865 INFO L225 Difference]: With dead ends: 51 [2023-11-19 07:50:58,865 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 07:50:58,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 07:50:58,874 INFO L413 NwaCegarLoop]: 30 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, 30 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 07:50:58,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 07:50:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 07:50:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:50:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-19 07:50:58,956 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2023-11-19 07:50:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:58,957 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-19 07:50:58,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-19 07:50:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:50:58,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:58,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:59,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:59,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:50:59,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:59,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash 648049197, now seen corresponding path program 1 times [2023-11-19 07:50:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098498698] [2023-11-19 07:50:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:59,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125132187] [2023-11-19 07:50:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:59,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:59,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:59,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:59,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:59,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 07:50:59,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:59,529 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:50:59,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2023-11-19 07:50:59,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-11-19 07:50:59,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-19 07:50:59,854 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 07:50:59,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098498698] [2023-11-19 07:50:59,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:59,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125132187] [2023-11-19 07:50:59,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125132187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:59,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:59,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:50:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151522076] [2023-11-19 07:50:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:59,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:59,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:59,860 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:00,129 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-11-19 07:51:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:51:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 07:51:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:00,131 INFO L225 Difference]: With dead ends: 40 [2023-11-19 07:51:00,132 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 07:51:00,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:00,134 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:00,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 95 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 07:51:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2023-11-19 07:51:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:51:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-11-19 07:51:00,147 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 11 [2023-11-19 07:51:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:00,147 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-11-19 07:51:00,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-11-19 07:51:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:51:00,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:00,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:00,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:00,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:00,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:00,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1370831791, now seen corresponding path program 1 times [2023-11-19 07:51:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747332040] [2023-11-19 07:51:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:00,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:00,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798109250] [2023-11-19 07:51:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:00,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:00,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:00,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:00,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d286a3-0c9e-48ca-bb4d-2212e8c306f5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:51:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:00,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-19 07:51:00,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:00,641 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:51:00,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-11-19 07:51:00,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2023-11-19 07:51:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:51:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:51:01,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:51:01,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 62 [2023-11-19 07:51:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:01,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:39,109 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (store |c_#memory_int| |c_func_to_recursive_line_27_to_35_0_#in~c.base| (let ((.cse8 (select |c_#memory_int| |c_func_to_recursive_line_27_to_35_0_#in~c.base|))) (store .cse8 |c_func_to_recursive_line_27_to_35_0_#in~c.offset| (+ (select .cse8 |c_func_to_recursive_line_27_to_35_0_#in~c.offset|) 1)))))) (let ((.cse7 (select .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.base|))) (let ((.cse0 (select .cse7 |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (let ((.cse5 (+ .cse0 1))) (let ((.cse3 (store .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.base| (store .cse7 |c_func_to_recursive_line_27_to_35_0_#in~y.offset| .cse5)))) (let ((.cse4 (select .cse3 |c_func_to_recursive_line_27_to_35_0_#in~x.base|))) (let ((.cse2 (select .cse4 |c_func_to_recursive_line_27_to_35_0_#in~x.offset|))) (let ((.cse1 (select (select (store .cse3 |c_func_to_recursive_line_27_to_35_0_#in~x.base| (store .cse4 |c_func_to_recursive_line_27_to_35_0_#in~x.offset| (+ .cse2 (* (* (* (* .cse5 .cse5) .cse5) .cse5) .cse5)))) |c_func_to_recursive_line_27_to_35_0_#in~y.base|) |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (= (+ (* 60 .cse0) (* .cse1 .cse1) (* .cse2 12) (* (* .cse0 .cse0 .cse0) 120) 12 (* (* .cse0 .cse0 .cse0 .cse0 .cse0) 12) (* 120 (* .cse0 .cse0)) (* 60 (* .cse0 .cse0 .cse0 .cse0))) (+ (* (* .cse1 .cse1 .cse1 .cse1 .cse1 .cse1) 2) (* (* .cse1 .cse1 .cse1 .cse1 .cse1) 6) (* 5 (* .cse1 .cse1 .cse1 .cse1)))))))))))) is different from false [2023-11-19 07:51:41,520 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse6 (store |c_#memory_int| |c_func_to_recursive_line_27_to_35_0_#in~c.base| (let ((.cse8 (select |c_#memory_int| |c_func_to_recursive_line_27_to_35_0_#in~c.base|))) (store .cse8 |c_func_to_recursive_line_27_to_35_0_#in~c.offset| (+ (select .cse8 |c_func_to_recursive_line_27_to_35_0_#in~c.offset|) 1)))))) (let ((.cse7 (select .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.base|))) (let ((.cse0 (select .cse7 |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (let ((.cse5 (+ .cse0 1))) (let ((.cse3 (store .cse6 |c_func_to_recursive_line_27_to_35_0_#in~y.base| (store .cse7 |c_func_to_recursive_line_27_to_35_0_#in~y.offset| .cse5)))) (let ((.cse4 (select .cse3 |c_func_to_recursive_line_27_to_35_0_#in~x.base|))) (let ((.cse2 (select .cse4 |c_func_to_recursive_line_27_to_35_0_#in~x.offset|))) (let ((.cse1 (select (select (store .cse3 |c_func_to_recursive_line_27_to_35_0_#in~x.base| (store .cse4 |c_func_to_recursive_line_27_to_35_0_#in~x.offset| (+ .cse2 (* (* (* (* .cse5 .cse5) .cse5) .cse5) .cse5)))) |c_func_to_recursive_line_27_to_35_0_#in~y.base|) |c_func_to_recursive_line_27_to_35_0_#in~y.offset|))) (= (+ (* 60 .cse0) (* .cse1 .cse1) (* .cse2 12) (* (* .cse0 .cse0 .cse0) 120) 12 (* (* .cse0 .cse0 .cse0 .cse0 .cse0) 12) (* 120 (* .cse0 .cse0)) (* 60 (* .cse0 .cse0 .cse0 .cse0))) (+ (* (* .cse1 .cse1 .cse1 .cse1 .cse1 .cse1) 2) (* (* .cse1 .cse1 .cse1 .cse1 .cse1) 6) (* 5 (* .cse1 .cse1 .cse1 .cse1)))))))))))) is different from true [2023-11-19 07:51:46,025 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#c~0#1.base| (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#c~0#1.base|))) (store .cse8 |c_ULTIMATE.start_main_~#c~0#1.offset| (+ (select .cse8 |c_ULTIMATE.start_main_~#c~0#1.offset|) 1)))))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#y~0#1.base|))) (let ((.cse0 (select .cse7 |c_ULTIMATE.start_main_~#y~0#1.offset|))) (let ((.cse5 (+ .cse0 1))) (let ((.cse3 (store .cse6 |c_ULTIMATE.start_main_~#y~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#y~0#1.offset| .cse5)))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#x~0#1.base|))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~#x~0#1.offset|))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#x~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#x~0#1.offset| (+ .cse1 (* (* .cse5 (* .cse5 (* .cse5 .cse5))) .cse5)))) |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|))) (= (+ (* (* .cse0 .cse0 .cse0) 120) (* .cse0 60) (* (* .cse0 .cse0 .cse0 .cse0) 60) (* 120 (* .cse0 .cse0)) (* .cse1 12) (* (* .cse0 .cse0 .cse0 .cse0 .cse0) 12) 12 (* .cse2 .cse2)) (+ (* (* .cse2 .cse2 .cse2 .cse2 .cse2) 6) (* (* .cse2 .cse2 .cse2 .cse2 .cse2 .cse2) 2) (* 5 (* .cse2 .cse2 .cse2 .cse2)))))))))))) is different from false [2023-11-19 07:51:53,228 WARN L293 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 62 DAG size of output: 48 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-19 07:51:53,229 INFO L349 Elim1Store]: treesize reduction 88, result has 43.9 percent of original size [2023-11-19 07:51:53,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 12462 treesize of output 2654 [2023-11-19 07:51:53,438 INFO L349 Elim1Store]: treesize reduction 107, result has 7.0 percent of original size [2023-11-19 07:51:53,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 1937 treesize of output 1887 [2023-11-19 07:52:00,662 WARN L293 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 146 DAG size of output: 89 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-19 07:52:00,663 INFO L349 Elim1Store]: treesize reduction 291, result has 36.9 percent of original size [2023-11-19 07:52:00,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 43 case distinctions, treesize of input 1792 treesize of output 1983 [2023-11-19 07:52:00,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-19 07:52:04,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4