./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:15:42,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:15:42,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:15:42,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:15:42,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:15:42,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:15:42,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:15:42,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:15:42,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:15:42,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:15:42,642 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:15:42,642 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:15:42,642 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:15:42,643 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:15:42,643 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:15:42,643 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:15:42,643 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:15:42,643 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:15:42,643 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:15:42,644 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:15:42,647 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:15:42,647 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:15:42,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:15:42,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:15:42,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:15:42,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:15:42,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:15:42,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:15:42,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:15:42,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:15:42,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:15:42,651 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:15:42,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:15:42,652 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2024-11-14 05:15:43,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:15:43,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:15:43,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:15:43,060 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:15:43,060 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:15:43,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c Unable to find full path for "g++" [2024-11-14 05:15:45,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:15:45,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:15:45,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-14 05:15:45,762 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data/5f01607bc/37925e9feaa944e3b4667b7b28b18cb9/FLAGf3fdde4dc [2024-11-14 05:15:45,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data/5f01607bc/37925e9feaa944e3b4667b7b28b18cb9 [2024-11-14 05:15:45,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:15:45,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:15:45,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:15:45,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:15:45,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:15:45,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:15:45" (1/1) ... [2024-11-14 05:15:45,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b9f0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:45, skipping insertion in model container [2024-11-14 05:15:45,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:15:45" (1/1) ... [2024-11-14 05:15:45,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:15:46,029 WARN L250 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_dce47982-b4e0-4ff1-9059-702354073ede/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-11-14 05:15:46,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:15:46,080 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:15:46,092 WARN L250 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_dce47982-b4e0-4ff1-9059-702354073ede/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-11-14 05:15:46,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:15:46,144 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:15:46,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46 WrapperNode [2024-11-14 05:15:46,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:15:46,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:15:46,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:15:46,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:15:46,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,221 INFO L138 Inliner]: procedures = 18, calls = 127, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 95 [2024-11-14 05:15:46,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:15:46,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:15:46,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:15:46,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:15:46,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:15:46,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:15:46,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:15:46,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:15:46,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (1/1) ... [2024-11-14 05:15:46,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:15:46,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:46,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:15:46,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:15:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:15:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:15:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:15:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:15:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-14 05:15:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-14 05:15:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-14 05:15:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-14 05:15:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:15:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-14 05:15:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-14 05:15:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:15:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:15:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:15:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:15:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:15:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:15:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:15:46,512 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:15:46,515 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:15:47,130 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-14 05:15:47,131 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:15:47,177 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:15:47,177 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:15:47,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:15:47 BoogieIcfgContainer [2024-11-14 05:15:47,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:15:47,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:15:47,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:15:47,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:15:47,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:15:45" (1/3) ... [2024-11-14 05:15:47,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2654bc99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:15:47, skipping insertion in model container [2024-11-14 05:15:47,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:15:46" (2/3) ... [2024-11-14 05:15:47,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2654bc99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:15:47, skipping insertion in model container [2024-11-14 05:15:47,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:15:47" (3/3) ... [2024-11-14 05:15:47,191 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-11-14 05:15:47,210 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:15:47,212 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd3-ll.c that has 6 procedures, 48 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 05:15:47,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:15:47,299 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61c533e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:15:47,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:15:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 05:15:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 05:15:47,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:47,314 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:47,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:47,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 492243252, now seen corresponding path program 1 times [2024-11-14 05:15:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656268071] [2024-11-14 05:15:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:47,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:15:47,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656268071] [2024-11-14 05:15:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656268071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:15:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:15:47,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:15:47,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350706233] [2024-11-14 05:15:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:15:47,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:15:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:15:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:15:47,817 INFO L87 Difference]: Start difference. First operand has 48 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:15:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:47,878 INFO L93 Difference]: Finished difference Result 88 states and 125 transitions. [2024-11-14 05:15:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:15:47,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-11-14 05:15:47,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:47,891 INFO L225 Difference]: With dead ends: 88 [2024-11-14 05:15:47,892 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 05:15:47,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:15:47,904 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:47,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:15:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 05:15:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-14 05:15:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 31 states have internal predecessors, (31), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 05:15:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-14 05:15:47,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 19 [2024-11-14 05:15:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:47,969 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-14 05:15:47,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:15:47,970 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-14 05:15:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:15:47,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:47,973 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:47,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:15:47,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:47,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1191826377, now seen corresponding path program 1 times [2024-11-14 05:15:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:47,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43139546] [2024-11-14 05:15:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:47,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:15:50,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:50,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43139546] [2024-11-14 05:15:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43139546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:15:50,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:15:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:15:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784255299] [2024-11-14 05:15:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:15:50,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:15:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:15:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:15:50,399 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:15:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:51,203 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-11-14 05:15:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:15:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2024-11-14 05:15:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:51,208 INFO L225 Difference]: With dead ends: 60 [2024-11-14 05:15:51,208 INFO L226 Difference]: Without dead ends: 52 [2024-11-14 05:15:51,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:15:51,210 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:51,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 119 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:15:51,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-14 05:15:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-14 05:15:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 32 states have internal predecessors, (32), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-14 05:15:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-14 05:15:51,226 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 20 [2024-11-14 05:15:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:51,226 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-14 05:15:51,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:15:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-14 05:15:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:15:51,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:51,228 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:51,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:15:51,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:51,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:51,229 INFO L85 PathProgramCache]: Analyzing trace with hash -940322403, now seen corresponding path program 1 times [2024-11-14 05:15:51,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:51,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160044125] [2024-11-14 05:15:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 05:15:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113974370] [2024-11-14 05:15:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:51,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:51,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:51,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:51,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:15:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:51,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 227 conjuncts are in the unsatisfiable core [2024-11-14 05:15:51,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:52,175 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2024-11-14 05:15:52,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2024-11-14 05:15:52,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-14 05:15:52,247 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:15:52,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-14 05:15:52,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-14 05:15:52,890 INFO L349 Elim1Store]: treesize reduction 707, result has 4.8 percent of original size [2024-11-14 05:15:52,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 34 case distinctions, treesize of input 175 treesize of output 174 [2024-11-14 05:16:25,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:25,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 29 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 352 treesize of output 58 [2024-11-14 05:16:25,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 55 [2024-11-14 05:16:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 40 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 55 [2024-11-14 05:16:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:16:32,508 INFO L224 Elim1Store]: Index analysis took 268 ms [2024-11-14 05:16:37,405 INFO L349 Elim1Store]: treesize reduction 2448, result has 11.3 percent of original size [2024-11-14 05:16:37,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 26 select indices, 26 select index equivalence classes, 85 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 264 case distinctions, treesize of input 140 treesize of output 401 [2024-11-14 05:17:17,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 70 [2024-11-14 05:17:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:17:17,771 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:17:17,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 51 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 69 [2024-11-14 05:17:18,145 INFO L224 Elim1Store]: Index analysis took 209 ms [2024-11-14 05:17:20,638 INFO L349 Elim1Store]: treesize reduction 1749, result has 10.8 percent of original size [2024-11-14 05:17:20,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 28 select indices, 28 select index equivalence classes, 133 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 245 case distinctions, treesize of input 154 treesize of output 309 [2024-11-14 05:17:21,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19 [2024-11-14 05:17:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:21,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:29,081 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_func_to_recursive_line_40_to_59_0_~#d~0.base_7| Int) (|ULTIMATE.start_main_~#a~0#1.offset| Int) (v_ArrVal_181 (Array Int Int)) (v_ArrVal_184 (Array Int Int)) (|v_func_to_recursive_line_40_to_59_0_~#v~0.base_7| Int) (|ULTIMATE.start_main_~#r~0#1.offset| Int) (v_ArrVal_185 (Array Int Int)) (v_ArrVal_188 (Array Int Int)) (|v_func_to_recursive_line_33_to_70_0_~#k~0.base_7| Int) (|ULTIMATE.start_main_~#b~0#1.offset| Int) (|v_func_to_recursive_line_33_to_70_0_~#c~0.base_7| Int) (|func_to_recursive_line_47_to_56_0_#t~mem4| Int) (v_ArrVal_175 Int) (v_ArrVal_186 Int) (|ULTIMATE.start_main_~#q~0#1.offset| Int)) (let ((.cse0 (store |c_#valid| |v_func_to_recursive_line_33_to_70_0_~#c~0.base_7| 1))) (let ((.cse7 (store .cse0 |v_func_to_recursive_line_33_to_70_0_~#k~0.base_7| 1))) (or (not (= (select .cse0 |v_func_to_recursive_line_33_to_70_0_~#k~0.base_7|) 0)) (let ((.cse1 (store (let ((.cse2 (store (store (store (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|))))) (store .cse6 |c_ULTIMATE.start_main_~#b~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#b~0#1.base|) |ULTIMATE.start_main_~#b~0#1.offset| (select (select .cse6 |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|)))))) (store .cse5 |c_ULTIMATE.start_main_~#p~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#p~0#1.base|) |c_ULTIMATE.start_main_~#p~0#1.offset| 1))))) (store .cse4 |c_ULTIMATE.start_main_~#q~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#q~0#1.base|) |ULTIMATE.start_main_~#q~0#1.offset| v_ArrVal_175))))) (store .cse3 |c_ULTIMATE.start_main_~#r~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#r~0#1.base|) |ULTIMATE.start_main_~#r~0#1.offset| 0))) |c_ULTIMATE.start_main_~#s~0#1.base| v_ArrVal_181) |v_func_to_recursive_line_33_to_70_0_~#c~0.base_7| v_ArrVal_185) |v_func_to_recursive_line_33_to_70_0_~#k~0.base_7| v_ArrVal_184))) (store .cse2 |v_func_to_recursive_line_40_to_59_0_~#d~0.base_7| (store (select .cse2 |v_func_to_recursive_line_40_to_59_0_~#d~0.base_7|) 0 1))) |v_func_to_recursive_line_40_to_59_0_~#v~0.base_7| v_ArrVal_188))) (= (select (select .cse1 |c_ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|) (+ (* (select (select .cse1 |c_ULTIMATE.start_main_~#p~0#1.base|) |c_ULTIMATE.start_main_~#p~0#1.offset|) (select (select .cse1 |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|)) (* |func_to_recursive_line_47_to_56_0_#t~mem4| (select (select .cse1 |c_ULTIMATE.start_main_~#r~0#1.base|) |ULTIMATE.start_main_~#r~0#1.offset|))))) (not (= (select (store .cse7 |v_func_to_recursive_line_40_to_59_0_~#d~0.base_7| v_ArrVal_186) |v_func_to_recursive_line_40_to_59_0_~#v~0.base_7|) 0)) (not (= (select |c_#valid| |v_func_to_recursive_line_33_to_70_0_~#c~0.base_7|) 0)) (not (= (select .cse7 |v_func_to_recursive_line_40_to_59_0_~#d~0.base_7|) 0)))))) is different from false [2024-11-14 05:17:29,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160044125] [2024-11-14 05:17:29,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 05:17:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113974370] [2024-11-14 05:17:29,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113974370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157829926] [2024-11-14 05:17:29,285 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 05:17:29,285 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:17:29,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:17:29,294 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:17:29,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:17:30,230 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_33_to_70_0 with input of size 166 for LOIs [2024-11-14 05:17:30,643 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_40_to_59_0 with input of size 198 for LOIs [2024-11-14 05:17:31,189 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_47_to_56_0 with input of size 227 for LOIs [2024-11-14 05:17:31,661 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 218 for LOIs [2024-11-14 05:17:31,981 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 215 for LOIs [2024-11-14 05:17:32,099 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:20:01,655 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 230 DAG size of output: 209 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:20:34,514 WARN L286 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 238 DAG size of output: 217 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:20:51,723 WARN L286 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 246 DAG size of output: 225 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:21:22,980 WARN L286 SmtUtils]: Spent 18.86s on a formula simplification. DAG size of input: 271 DAG size of output: 242 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:21:49,308 WARN L286 SmtUtils]: Spent 18.29s on a formula simplification. DAG size of input: 227 DAG size of output: 224 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:22:13,149 WARN L286 SmtUtils]: Spent 15.40s on a formula simplification. DAG size of input: 275 DAG size of output: 272 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:22:50,483 WARN L286 SmtUtils]: Spent 22.78s on a formula simplification. DAG size of input: 295 DAG size of output: 292 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:23:08,096 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 05:23:08,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-14 05:23:08,097 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.generateInterpolants(SifaRunner.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 40 more [2024-11-14 05:23:08,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:23:08,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-14 05:23:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600337879] [2024-11-14 05:23:08,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:08,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 05:23:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 05:23:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2174, Unknown=100, NotChecked=96, Total=2550 [2024-11-14 05:23:08,112 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:23:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:23:08,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 385.7s TimeCoverageRelationStatistics Valid=180, Invalid=2174, Unknown=100, NotChecked=96, Total=2550 [2024-11-14 05:23:08,117 INFO L432 NwaCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 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 [2024-11-14 05:23:08,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:23:08,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:23:08,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:08,320 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@d5c1f1f at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:460) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:104) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:373) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:08,323 INFO L158 Benchmark]: Toolchain (without parser) took 442511.33ms. Allocated memory was 142.6MB in the beginning and 654.3MB in the end (delta: 511.7MB). Free memory was 119.2MB in the beginning and 361.8MB in the end (delta: -242.7MB). Peak memory consumption was 270.7MB. Max. memory is 16.1GB. [2024-11-14 05:23:08,324 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:23:08,328 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.01ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 106.6MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:23:08,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.66ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 105.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:23:08,330 INFO L158 Benchmark]: Boogie Preprocessor took 36.04ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 103.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:23:08,331 INFO L158 Benchmark]: RCFGBuilder took 915.57ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 77.5MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:23:08,331 INFO L158 Benchmark]: TraceAbstraction took 441141.08ms. Allocated memory was 142.6MB in the beginning and 654.3MB in the end (delta: 511.7MB). Free memory was 76.8MB in the beginning and 361.8MB in the end (delta: -285.1MB). Peak memory consumption was 228.7MB. Max. memory is 16.1GB. [2024-11-14 05:23:08,335 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.01ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 106.6MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.66ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 105.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.04ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 103.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 915.57ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 77.5MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 441141.08ms. Allocated memory was 142.6MB in the beginning and 654.3MB in the end (delta: 511.7MB). Free memory was 76.8MB in the beginning and 361.8MB in the end (delta: -285.1MB). Peak memory consumption was 228.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@d5c1f1f de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@d5c1f1f: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:23:11,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:23:11,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:23:11,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:23:11,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:23:11,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:23:11,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:23:11,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:23:11,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:23:11,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:23:11,616 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:23:11,616 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:23:11,616 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:23:11,616 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:23:11,617 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:23:11,617 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:23:11,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:23:11,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:23:11,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:23:11,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:23:11,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:23:11,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:23:11,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:23:11,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:23:11,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:23:11,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:23:11,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:23:11,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2024-11-14 05:23:12,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:23:12,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:23:12,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:23:12,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:23:12,050 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:23:12,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c Unable to find full path for "g++" [2024-11-14 05:23:14,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:23:14,720 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:23:14,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-11-14 05:23:14,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data/b36911e21/2e00f9c1418a419784b907c9122f8f5a/FLAGf898f60d3 [2024-11-14 05:23:15,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/data/b36911e21/2e00f9c1418a419784b907c9122f8f5a [2024-11-14 05:23:15,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:23:15,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:23:15,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:23:15,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:23:15,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:23:15,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2150272b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15, skipping insertion in model container [2024-11-14 05:23:15,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:23:15,272 WARN L250 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_dce47982-b4e0-4ff1-9059-702354073ede/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-11-14 05:23:15,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:23:15,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:23:15,361 WARN L250 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_dce47982-b4e0-4ff1-9059-702354073ede/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-11-14 05:23:15,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:23:15,408 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:23:15,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15 WrapperNode [2024-11-14 05:23:15,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:23:15,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:23:15,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:23:15,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:23:15,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,464 INFO L138 Inliner]: procedures = 22, calls = 127, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 93 [2024-11-14 05:23:15,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:23:15,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:23:15,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:23:15,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:23:15,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:23:15,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:23:15,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:23:15,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:23:15,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (1/1) ... [2024-11-14 05:23:15,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:23:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:15,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:23:15,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:23:15,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:23:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-11-14 05:23:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-11-14 05:23:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-11-14 05:23:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-11-14 05:23:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:23:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-11-14 05:23:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-11-14 05:23:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2024-11-14 05:23:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 05:23:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:23:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:23:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2024-11-14 05:23:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:23:15,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:23:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 05:23:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:23:15,804 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:23:15,808 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:23:18,615 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-14 05:23:18,616 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:23:18,629 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:23:18,631 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:23:18,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:18 BoogieIcfgContainer [2024-11-14 05:23:18,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:23:18,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:23:18,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:23:18,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:23:18,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:23:15" (1/3) ... [2024-11-14 05:23:18,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d4f22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:18, skipping insertion in model container [2024-11-14 05:23:18,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:23:15" (2/3) ... [2024-11-14 05:23:18,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d4f22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:23:18, skipping insertion in model container [2024-11-14 05:23:18,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:23:18" (3/3) ... [2024-11-14 05:23:18,659 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-11-14 05:23:18,678 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:23:18,681 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd3-ll.c that has 6 procedures, 53 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 05:23:18,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:23:18,758 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60a41e9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:23:18,758 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:23:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 05:23:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:23:18,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:18,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:18,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:23:18,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash 493960377, now seen corresponding path program 1 times [2024-11-14 05:23:18,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:23:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376020773] [2024-11-14 05:23:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:18,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:23:18,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:23:18,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:23:18,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 05:23:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:19,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:23:19,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:23:19,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:23:19,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:23:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376020773] [2024-11-14 05:23:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376020773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:23:19,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:23:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:23:19,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994648304] [2024-11-14 05:23:19,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:23:19,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:23:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:23:19,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:23:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:23:19,301 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:23:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:19,337 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2024-11-14 05:23:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:23:19,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-14 05:23:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:19,347 INFO L225 Difference]: With dead ends: 103 [2024-11-14 05:23:19,347 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 05:23:19,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:23:19,355 INFO L432 NwaCegarLoop]: 63 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, 63 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 [2024-11-14 05:23:19,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:23:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 05:23:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-14 05:23:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 34 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 05:23:19,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-14 05:23:19,405 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 24 [2024-11-14 05:23:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:19,406 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-14 05:23:19,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:23:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-14 05:23:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:23:19,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:19,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:19,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 05:23:19,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:23:19,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:23:19,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash -256971101, now seen corresponding path program 1 times [2024-11-14 05:23:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:23:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962399534] [2024-11-14 05:23:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:19,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:23:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:23:19,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:23:19,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce47982-b4e0-4ff1-9059-702354073ede/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 05:23:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:20,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 05:23:20,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:21,165 INFO L349 Elim1Store]: treesize reduction 30, result has 50.8 percent of original size [2024-11-14 05:23:21,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 119737 treesize of output 117691 [2024-11-14 05:23:21,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-14 05:23:25,165 INFO L349 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2024-11-14 05:23:25,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 393 treesize of output 371 [2024-11-14 05:23:26,548 INFO L190 IndexEqualityManager]: detected not equals via solver