./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 e972d7fe67c03faae458b4aeefde235726c38e34da23998883d4b544999b0f51 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:50:32,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:50:32,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:50:32,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:50:32,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:50:32,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:50:32,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:50:32,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:50:32,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:50:32,904 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:50:32,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:50:32,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:50:32,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:50:32,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:50:32,905 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:50:32,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:50:32,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:50:32,905 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:50:32,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:50:32,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:50:32,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:50:32,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:50:32,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:50:32,911 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/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 -> e972d7fe67c03faae458b4aeefde235726c38e34da23998883d4b544999b0f51 [2025-03-08 05:50:33,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:50:33,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:50:33,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:50:33,118 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:50:33,118 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:50:33,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c [2025-03-08 05:50:34,306 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a2c9cf0/ee6cef760bee4383b6925500d44945a0/FLAG4871545a5 [2025-03-08 05:50:34,520 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:50:34,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c [2025-03-08 05:50:34,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a2c9cf0/ee6cef760bee4383b6925500d44945a0/FLAG4871545a5 [2025-03-08 05:50:34,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a2c9cf0/ee6cef760bee4383b6925500d44945a0 [2025-03-08 05:50:34,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:50:34,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:50:34,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:50:34,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:50:34,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:50:34,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a317b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34, skipping insertion in model container [2025-03-08 05:50:34,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:50:34,687 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c[1106,1119] [2025-03-08 05:50:34,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:50:34,710 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:50:34,718 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c[1106,1119] [2025-03-08 05:50:34,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:50:34,733 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:50:34,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34 WrapperNode [2025-03-08 05:50:34,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:50:34,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:50:34,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:50:34,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:50:34,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,754 INFO L138 Inliner]: procedures = 18, calls = 104, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 95 [2025-03-08 05:50:34,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:50:34,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:50:34,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:50:34,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:50:34,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,773 INFO L175 MemorySlicer]: Split 66 memory accesses to 8 slices as follows [2, 8, 7, 11, 13, 8, 8, 9]. 20 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 7, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 1, 0, 2, 2, 2, 2, 1]. [2025-03-08 05:50:34,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,780 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:50:34,785 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:50:34,785 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:50:34,785 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:50:34,786 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (1/1) ... [2025-03-08 05:50:34,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:50:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:50:34,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 05:50:34,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 05:50:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:50:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_35_to_38_0 [2025-03-08 05:50:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_35_to_38_0 [2025-03-08 05:50:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_48_to_53_0 [2025-03-08 05:50:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_48_to_53_0 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 05:50:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:50:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:50:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_45_0 [2025-03-08 05:50:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_45_0 [2025-03-08 05:50:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 05:50:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 05:50:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 05:50:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:50:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 05:50:34,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 05:50:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 05:50:34,917 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:50:34,918 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:50:35,085 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L122: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#u~0#1.base, main_~#u~0#1.offset);havoc main_~#u~0#1.base, main_~#u~0#1.offset;call ULTIMATE.dealloc(main_~#v~0#1.base, main_~#v~0#1.offset);havoc main_~#v~0#1.base, main_~#v~0#1.offset; [2025-03-08 05:50:35,120 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-08 05:50:35,121 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:50:35,129 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:50:35,130 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:50:35,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:50:35 BoogieIcfgContainer [2025-03-08 05:50:35,130 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:50:35,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:50:35,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:50:35,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:50:35,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:50:34" (1/3) ... [2025-03-08 05:50:35,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5775b697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:50:35, skipping insertion in model container [2025-03-08 05:50:35,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:50:34" (2/3) ... [2025-03-08 05:50:35,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5775b697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:50:35, skipping insertion in model container [2025-03-08 05:50:35,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:50:35" (3/3) ... [2025-03-08 05:50:35,138 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_lcm1.c [2025-03-08 05:50:35,147 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:50:35,148 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_lcm1.c that has 6 procedures, 55 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 05:50:35,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:50:35,184 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;@628be3cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:50:35,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:50:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 05:50:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 05:50:35,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:50:35,191 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:50:35,191 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:50:35,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:50:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -614120080, now seen corresponding path program 1 times [2025-03-08 05:50:35,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:50:35,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611284859] [2025-03-08 05:50:35,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:35,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:50:35,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 05:50:35,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 05:50:35,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:35,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:50:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:50:35,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:50:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611284859] [2025-03-08 05:50:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611284859] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:50:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916994623] [2025-03-08 05:50:35,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:35,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:50:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:50:35,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:50:35,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:50:35,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 05:50:35,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 05:50:35,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:35,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:50:35,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 05:50:35,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:50:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:50:35,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:50:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916994623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:50:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:50:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 05:50:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157114742] [2025-03-08 05:50:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:50:35,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 05:50:35,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:50:35,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 05:50:35,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:50:35,519 INFO L87 Difference]: Start difference. First operand has 55 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 05:50:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:50:35,536 INFO L93 Difference]: Finished difference Result 107 states and 155 transitions. [2025-03-08 05:50:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 05:50:35,537 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2025-03-08 05:50:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:50:35,542 INFO L225 Difference]: With dead ends: 107 [2025-03-08 05:50:35,543 INFO L226 Difference]: Without dead ends: 51 [2025-03-08 05:50:35,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:50:35,548 INFO L435 NwaCegarLoop]: 67 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, 67 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 [2025-03-08 05:50:35,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:50:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-03-08 05:50:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-03-08 05:50:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 34 states have internal predecessors, (34), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 05:50:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2025-03-08 05:50:35,591 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 33 [2025-03-08 05:50:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:50:35,592 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2025-03-08 05:50:35,592 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 05:50:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2025-03-08 05:50:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 05:50:35,593 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:50:35,593 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:50:35,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 05:50:35,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 05:50:35,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:50:35,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:50:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash 880104436, now seen corresponding path program 1 times [2025-03-08 05:50:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:50:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138374463] [2025-03-08 05:50:35,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:35,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:50:35,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 05:50:35,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 05:50:35,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:35,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:50:35,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136450910] [2025-03-08 05:50:35,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:35,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:50:35,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:50:35,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:50:35,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:50:35,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 05:50:35,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 05:50:35,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:35,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:50:35,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-03-08 05:50:36,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:50:36,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2025-03-08 05:50:36,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2025-03-08 05:50:36,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2025-03-08 05:50:36,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2025-03-08 05:50:36,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2025-03-08 05:50:36,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-08 05:50:36,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 05:50:36,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-08 05:50:36,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 05:50:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:50:36,176 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:50:36,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:50:36,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138374463] [2025-03-08 05:50:36,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:50:36,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136450910] [2025-03-08 05:50:36,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136450910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:50:36,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:50:36,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:50:36,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132361333] [2025-03-08 05:50:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:50:36,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:50:36,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:50:36,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:50:36,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:50:36,179 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 05:50:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:50:36,371 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2025-03-08 05:50:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:50:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2025-03-08 05:50:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:50:36,373 INFO L225 Difference]: With dead ends: 66 [2025-03-08 05:50:36,373 INFO L226 Difference]: Without dead ends: 64 [2025-03-08 05:50:36,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:50:36,374 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:50:36,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 334 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:50:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-08 05:50:36,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2025-03-08 05:50:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.131578947368421) internal successors, (43), 42 states have internal predecessors, (43), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2025-03-08 05:50:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2025-03-08 05:50:36,388 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 33 [2025-03-08 05:50:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:50:36,389 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2025-03-08 05:50:36,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 05:50:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2025-03-08 05:50:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-08 05:50:36,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:50:36,390 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:50:36,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 05:50:36,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 05:50:36,594 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:50:36,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:50:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1321434078, now seen corresponding path program 1 times [2025-03-08 05:50:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:50:36,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530178905] [2025-03-08 05:50:36,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:36,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:50:36,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-08 05:50:36,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-08 05:50:36,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:36,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:50:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080348095] [2025-03-08 05:50:36,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:36,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:50:36,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:50:36,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:50:36,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:50:36,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-08 05:50:36,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-08 05:50:36,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:36,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:50:36,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 125 conjuncts are in the unsatisfiable core [2025-03-08 05:50:36,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:50:36,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2025-03-08 05:50:36,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2025-03-08 05:50:36,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2025-03-08 05:50:36,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2025-03-08 05:50:36,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2025-03-08 05:50:37,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-08 05:50:37,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 05:50:37,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-08 05:50:37,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 05:50:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:50:37,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:50:42,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:50:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530178905] [2025-03-08 05:50:42,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:50:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080348095] [2025-03-08 05:50:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080348095] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:50:42,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:50:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-03-08 05:50:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268800045] [2025-03-08 05:50:42,387 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 05:50:42,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 05:50:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:50:42,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 05:50:42,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=173, Unknown=1, NotChecked=0, Total=210 [2025-03-08 05:50:42,388 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:50:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:50:43,529 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2025-03-08 05:50:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:50:43,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2025-03-08 05:50:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:50:43,531 INFO L225 Difference]: With dead ends: 112 [2025-03-08 05:50:43,532 INFO L226 Difference]: Without dead ends: 110 [2025-03-08 05:50:43,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=69, Invalid=310, Unknown=1, NotChecked=0, Total=380 [2025-03-08 05:50:43,533 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 62 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 05:50:43,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 311 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 05:50:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-08 05:50:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2025-03-08 05:50:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 72 states have internal predecessors, (76), 26 states have call successors, (26), 13 states have call predecessors, (26), 13 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2025-03-08 05:50:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2025-03-08 05:50:43,547 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 43 [2025-03-08 05:50:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:50:43,547 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2025-03-08 05:50:43,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:50:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2025-03-08 05:50:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-08 05:50:43,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:50:43,548 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:50:43,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 05:50:43,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:50:43,749 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:50:43,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:50:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash -581029696, now seen corresponding path program 1 times [2025-03-08 05:50:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:50:43,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212061173] [2025-03-08 05:50:43,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:50:43,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-08 05:50:43,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-08 05:50:43,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:50:43,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:50:43,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219658235] [2025-03-08 05:50:43,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:50:43,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:50:43,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:50:43,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:50:43,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:50:43,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes.