./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_1+newton_3_6.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a842a693834937bbb730d9f1eb46f6df5c10533a9bdb1ffd45fcb777ef149243 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 21:46:03,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:46:03,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:46:03,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:46:03,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:46:03,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:46:03,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:46:03,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:46:03,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:46:03,865 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:46:03,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:46:03,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:46:03,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:46:03,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:46:03,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:46:03,867 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:46:03,868 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:46:03,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:46:03,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:46:03,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:46:03,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:46:03,869 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a842a693834937bbb730d9f1eb46f6df5c10533a9bdb1ffd45fcb777ef149243 [2025-02-07 21:46:04,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:46:04,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:46:04,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:46:04,142 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:46:04,142 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:46:04,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_3_6.i [2025-02-07 21:46:05,429 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/20bee71c7/de562119a6f84889b36404dc98d31591/FLAGb7fb0a123 [2025-02-07 21:46:05,658 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:46:05,659 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i [2025-02-07 21:46:05,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/20bee71c7/de562119a6f84889b36404dc98d31591/FLAGb7fb0a123 [2025-02-07 21:46:05,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/20bee71c7/de562119a6f84889b36404dc98d31591 [2025-02-07 21:46:05,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:46:05,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:46:05,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:46:05,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:46:05,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:46:05,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:05,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f84469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05, skipping insertion in model container [2025-02-07 21:46:05,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:05,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:46:05,862 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[1226,1239] [2025-02-07 21:46:05,895 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[2828,2841] [2025-02-07 21:46:05,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:46:05,912 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:46:05,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[1226,1239] [2025-02-07 21:46:05,939 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[2828,2841] [2025-02-07 21:46:05,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:46:05,953 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:46:05,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05 WrapperNode [2025-02-07 21:46:05,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:46:05,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:46:05,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:46:05,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:46:05,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:05,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:05,991 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2025-02-07 21:46:05,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:46:05,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:46:05,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:46:05,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:46:06,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,025 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-02-07 21:46:06,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,031 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:46:06,044 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:46:06,044 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:46:06,044 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:46:06,045 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (1/1) ... [2025-02-07 21:46:06,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:46:06,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:46:06,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 21:46:06,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 21:46:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:46:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-07 21:46:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-07 21:46:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-07 21:46:06,107 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-07 21:46:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:46:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 21:46:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:46:06,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:46:06,176 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:46:06,178 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:46:06,318 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L27: assume false;assume false; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L27: assume !false; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56: havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54: main1_#t~ret7#1 := gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1, gcd_test_~t~0#1;havoc gcd_test_#in~a#1, gcd_test_#in~b#1;assume { :end_inline_gcd_test } true;assume -128 <= main1_#t~ret7#1 && main1_#t~ret7#1 <= 127;main1_~g~0#1 := main1_#t~ret7#1;havoc main1_#t~ret7#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main1_~g~0#1 == main1_~y~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L-1: #t~ret18#1 := main_#res#1;havoc main_#t~nondet15#1, main_#t~ret16#1, main_#t~ret17#1;assume { :end_inline_main } true; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: assume 0 == __VERIFIER_assert_~cond#1; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: assume !(0 == __VERIFIER_assert_~cond#1); [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111: main_#t~ret17#1 := main2_#res#1;havoc main2_#t~nondet8#1, main2_#t~ret9#1, main2_#t~ret10#1, main2_#t~ret11#1, main2_#t~ret12#1, main2_#t~ret13#1, main2_#t~ret14#1, main2_~IN~0#1, main2_~x~1#1;assume { :end_inline_main2 } true;assume -2147483648 <= main_#t~ret17#1 && main_#t~ret17#1 <= 2147483647; [2025-02-07 21:46:06,319 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109: main_#t~ret16#1 := main1_#res#1;havoc main1_#t~nondet5#1, main1_#t~nondet6#1, main1_#t~ret7#1, main1_~x~0#1, main1_~y~0#1, main1_~g~0#1;assume { :end_inline_main1 } true;assume -2147483648 <= main_#t~ret16#1 && main_#t~ret16#1 <= 2147483647; [2025-02-07 21:46:06,352 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2025-02-07 21:46:06,352 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:46:06,365 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:46:06,365 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:46:06,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:46:06 BoogieIcfgContainer [2025-02-07 21:46:06,366 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:46:06,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:46:06,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:46:06,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:46:06,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:46:05" (1/3) ... [2025-02-07 21:46:06,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc916e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:46:06, skipping insertion in model container [2025-02-07 21:46:06,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:05" (2/3) ... [2025-02-07 21:46:06,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc916e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:46:06, skipping insertion in model container [2025-02-07 21:46:06,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:46:06" (3/3) ... [2025-02-07 21:46:06,377 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_6.i [2025-02-07 21:46:06,391 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:46:06,392 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_3_6.i that has 3 procedures, 32 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-07 21:46:06,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:46:06,463 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c532190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:46:06,463 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-07 21:46:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-07 21:46:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 21:46:06,475 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:46:06,476 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:46:06,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:46:06,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:46:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash 188303393, now seen corresponding path program 1 times [2025-02-07 21:46:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:46:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399719451] [2025-02-07 21:46:06,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:46:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:46:06,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 21:46:06,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 21:46:06,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:46:06,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:46:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 21:46:06,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:46:06,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399719451] [2025-02-07 21:46:06,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399719451] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:46:06,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:46:06,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 21:46:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901147275] [2025-02-07 21:46:06,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:46:06,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 21:46:06,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:46:06,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 21:46:06,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 21:46:06,651 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 21:46:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:46:06,666 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2025-02-07 21:46:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 21:46:06,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2025-02-07 21:46:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:46:06,672 INFO L225 Difference]: With dead ends: 52 [2025-02-07 21:46:06,672 INFO L226 Difference]: Without dead ends: 22 [2025-02-07 21:46:06,675 INFO L434 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 [2025-02-07 21:46:06,677 INFO L435 NwaCegarLoop]: 37 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, 37 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 [2025-02-07 21:46:06,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:46:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-07 21:46:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-07 21:46:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-07 21:46:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-07 21:46:06,707 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2025-02-07 21:46:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:46:06,709 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-07 21:46:06,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 21:46:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-07 21:46:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 21:46:06,710 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:46:06,710 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:46:06,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:46:06,712 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:46:06,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:46:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 539103330, now seen corresponding path program 1 times [2025-02-07 21:46:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:46:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842207570] [2025-02-07 21:46:06,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:46:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:46:06,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 21:46:06,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 21:46:06,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:46:06,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 21:46:06,749 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-07 21:46:06,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 21:46:06,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 21:46:06,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:46:06,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 21:46:06,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-07 21:46:06,785 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-07 21:46:06,788 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-02-07 21:46:06,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-02-07 21:46:06,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 21:46:06,794 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-07 21:46:06,816 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 21:46:06,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 09:46:06 BoogieIcfgContainer [2025-02-07 21:46:06,820 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 21:46:06,820 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 21:46:06,821 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 21:46:06,821 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 21:46:06,821 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:46:06" (3/4) ... [2025-02-07 21:46:06,823 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-07 21:46:06,824 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 21:46:06,826 INFO L158 Benchmark]: Toolchain (without parser) took 1122.33ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 56.3MB in the end (delta: 52.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-07 21:46:06,826 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:46:06,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.53ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 96.9MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:46:06,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.06ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:46:06,828 INFO L158 Benchmark]: Boogie Preprocessor took 51.46ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 93.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:46:06,828 INFO L158 Benchmark]: IcfgBuilder took 322.30ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 78.8MB in the end (delta: 14.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:46:06,828 INFO L158 Benchmark]: TraceAbstraction took 451.18ms. Allocated memory is still 142.6MB. Free memory was 78.2MB in the beginning and 56.3MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-07 21:46:06,828 INFO L158 Benchmark]: Witness Printer took 4.01ms. Allocated memory is still 142.6MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:46:06,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.53ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 96.9MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.06ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.46ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 93.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 322.30ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 78.8MB in the end (delta: 14.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 451.18ms. Allocated memory is still 142.6MB. Free memory was 78.2MB in the beginning and 56.3MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.01ms. Allocated memory is still 142.6MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 85, overapproximation of someBinaryArithmeticFLOAToperation at line 93, overapproximation of someBinaryArithmeticFLOAToperation at line 95, overapproximation of someBinaryArithmeticFLOAToperation at line 97. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) VAL [\old(x)=110] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=110] [L93] RET, EXPR f(IN) VAL [IN=110] [L93] CALL, EXPR fp(IN) VAL [\old(x)=110] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=110] [L93] RET, EXPR fp(IN) VAL [IN=110] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=112] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=112] [L95] RET, EXPR f(x) VAL [IN=110, x=112] [L95] CALL, EXPR fp(x) VAL [\old(x)=112] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=112] [L95] RET, EXPR fp(x) VAL [IN=110, x=112] [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) VAL [\old(x)=111] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111] [L97] RET, EXPR f(x) VAL [IN=110, x=111] [L97] CALL, EXPR fp(x) VAL [\old(x)=111] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111] [L97] RET, EXPR fp(x) VAL [IN=110, x=111] [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=110] [L102] reach_error() VAL [IN=110] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 37 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-07 21:46:06,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_1+newton_3_6.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a842a693834937bbb730d9f1eb46f6df5c10533a9bdb1ffd45fcb777ef149243 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 21:46:09,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:46:09,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-07 21:46:09,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:46:09,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:46:09,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:46:09,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:46:09,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:46:09,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:46:09,207 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:46:09,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:46:09,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:46:09,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:46:09,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:46:09,209 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:46:09,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:46:09,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:46:09,209 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:46:09,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:46:09,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:46:09,211 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:46:09,211 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:46:09,211 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:46:09,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:46:09,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:46:09,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:46:09,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:46:09,213 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a842a693834937bbb730d9f1eb46f6df5c10533a9bdb1ffd45fcb777ef149243 [2025-02-07 21:46:09,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:46:09,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:46:09,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:46:09,521 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:46:09,521 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:46:09,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_3_6.i [2025-02-07 21:46:10,845 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dbe291aa0/9e89fa7a4e594937b6b088cf5a04d6ab/FLAG870d3ab6b [2025-02-07 21:46:11,041 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:46:11,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i [2025-02-07 21:46:11,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dbe291aa0/9e89fa7a4e594937b6b088cf5a04d6ab/FLAG870d3ab6b [2025-02-07 21:46:11,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dbe291aa0/9e89fa7a4e594937b6b088cf5a04d6ab [2025-02-07 21:46:11,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:46:11,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:46:11,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:46:11,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:46:11,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:46:11,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adbab39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11, skipping insertion in model container [2025-02-07 21:46:11,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:46:11,228 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[1226,1239] [2025-02-07 21:46:11,262 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[2828,2841] [2025-02-07 21:46:11,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:46:11,279 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:46:11,294 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[1226,1239] [2025-02-07 21:46:11,308 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_3_6.i[2828,2841] [2025-02-07 21:46:11,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:46:11,327 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:46:11,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11 WrapperNode [2025-02-07 21:46:11,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:46:11,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:46:11,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:46:11,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:46:11,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,370 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 83 [2025-02-07 21:46:11,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:46:11,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:46:11,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:46:11,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:46:11,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,398 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-02-07 21:46:11,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:46:11,426 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:46:11,429 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:46:11,429 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:46:11,430 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (1/1) ... [2025-02-07 21:46:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:46:11,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:46:11,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 21:46:11,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 21:46:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:46:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-07 21:46:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-07 21:46:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2025-02-07 21:46:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2025-02-07 21:46:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-07 21:46:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-07 21:46:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:46:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:46:11,568 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:46:11,571 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:46:19,875 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L27: assume false;assume false; [2025-02-07 21:46:19,876 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L27: assume !false; [2025-02-07 21:46:19,876 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56: havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; [2025-02-07 21:46:19,876 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54: main1_#t~ret7#1 := gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1, gcd_test_~t~0#1;havoc gcd_test_#in~a#1, gcd_test_#in~b#1;assume { :end_inline_gcd_test } true;main1_~g~0#1 := main1_#t~ret7#1;havoc main1_#t~ret7#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~sign_extend~32~8(main1_~g~0#1) == ~sign_extend~32~8(main1_~y~0#1) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; [2025-02-07 21:46:19,877 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L-1: #t~ret18#1 := main_#res#1;havoc main_#t~nondet15#1, main_#t~ret16#1, main_#t~ret17#1;assume { :end_inline_main } true; [2025-02-07 21:46:19,878 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2025-02-07 21:46:19,878 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: assume 0bv32 == __VERIFIER_assert_~cond#1; [2025-02-07 21:46:19,878 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: assume !(0bv32 == __VERIFIER_assert_~cond#1); [2025-02-07 21:46:19,878 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111: main_#t~ret17#1 := main2_#res#1;havoc main2_#t~nondet8#1, main2_#t~ret9#1, main2_#t~ret10#1, main2_#t~ret11#1, main2_#t~ret12#1, main2_#t~ret13#1, main2_#t~ret14#1, main2_~IN~0#1, main2_~x~1#1;assume { :end_inline_main2 } true; [2025-02-07 21:46:19,879 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109: main_#t~ret16#1 := main1_#res#1;havoc main1_#t~nondet5#1, main1_#t~nondet6#1, main1_#t~ret7#1, main1_~x~0#1, main1_~y~0#1, main1_~g~0#1;assume { :end_inline_main1 } true; [2025-02-07 21:46:23,982 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-02-07 21:46:23,983 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:46:23,990 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:46:23,991 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:46:23,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:46:23 BoogieIcfgContainer [2025-02-07 21:46:23,992 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:46:23,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:46:23,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:46:23,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:46:23,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:46:11" (1/3) ... [2025-02-07 21:46:23,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9f359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:46:23, skipping insertion in model container [2025-02-07 21:46:24,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:46:11" (2/3) ... [2025-02-07 21:46:24,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9f359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:46:24, skipping insertion in model container [2025-02-07 21:46:24,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:46:23" (3/3) ... [2025-02-07 21:46:24,003 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_6.i [2025-02-07 21:46:24,016 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:46:24,018 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_3_6.i that has 3 procedures, 32 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-07 21:46:24,062 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:46:24,073 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@142aba88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:46:24,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-07 21:46:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-07 21:46:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 21:46:24,084 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:46:24,084 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:46:24,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:46:24,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:46:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 188303393, now seen corresponding path program 1 times [2025-02-07 21:46:24,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 21:46:24,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898174918] [2025-02-07 21:46:24,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:46:24,104 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 [2025-02-07 21:46:24,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 21:46:24,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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) [2025-02-07 21:46:24,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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 [2025-02-07 21:46:24,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 21:46:26,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 21:46:26,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:46:26,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:46:26,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 21:46:26,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:46:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 21:46:26,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 21:46:26,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 21:46:26,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898174918] [2025-02-07 21:46:26,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898174918] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:46:26,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:46:26,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 21:46:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982595662] [2025-02-07 21:46:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:46:26,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 21:46:26,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 21:46:26,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 21:46:26,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 21:46:26,723 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 22 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 21:46:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:46:26,735 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2025-02-07 21:46:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 21:46:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2025-02-07 21:46:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:46:26,740 INFO L225 Difference]: With dead ends: 52 [2025-02-07 21:46:26,740 INFO L226 Difference]: Without dead ends: 22 [2025-02-07 21:46:26,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 21:46:26,745 INFO L435 NwaCegarLoop]: 37 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, 37 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 [2025-02-07 21:46:26,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:46:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-07 21:46:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-07 21:46:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-07 21:46:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-07 21:46:26,775 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2025-02-07 21:46:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:46:26,775 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-07 21:46:26,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 21:46:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-07 21:46:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 21:46:26,777 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:46:26,778 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:46:26,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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 [2025-02-07 21:46:26,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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 [2025-02-07 21:46:26,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:46:26,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:46:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash 539103330, now seen corresponding path program 1 times [2025-02-07 21:46:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 21:46:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010730056] [2025-02-07 21:46:26,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:46:26,980 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 [2025-02-07 21:46:26,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 21:46:26,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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) [2025-02-07 21:46:26,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/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 [2025-02-07 21:46:27,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes.