./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partial_init_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/array-examples/standard_partial_init_ground.i -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 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:23:58,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:23:58,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:23:58,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:23:58,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:23:58,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:23:58,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:23:58,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:23:58,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:23:58,825 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:23:58,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:23:58,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:23:58,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:23:58,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:23:58,830 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:23:58,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:23:58,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:23:58,831 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:23:58,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:23:58,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:23:58,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:23:58,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:23:58,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:23:58,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:23:58,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:23:58,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:23:58,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:23:58,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:23:58,835 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:23:58,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:23:58,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:23:58,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:23:58,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:23:58,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:23:58,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:23:58,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:23:58,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:23:58,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:23:58,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:23:58,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:23:58,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:23:58,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:23:58,840 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 [2024-11-16 02:23:59,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:23:59,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:23:59,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:23:59,129 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:23:59,130 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:23:59,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2024-11-16 02:24:00,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:24:00,642 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:24:00,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2024-11-16 02:24:00,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915c07431/b8cdecd8ed4c43b1bf02f2e3872a5577/FLAG775191905 [2024-11-16 02:24:01,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915c07431/b8cdecd8ed4c43b1bf02f2e3872a5577 [2024-11-16 02:24:01,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:24:01,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:24:01,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:01,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:24:01,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:24:01,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e848c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01, skipping insertion in model container [2024-11-16 02:24:01,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,062 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:24:01,263 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/array-examples/standard_partial_init_ground.i[821,834] [2024-11-16 02:24:01,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:01,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:24:01,311 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/array-examples/standard_partial_init_ground.i[821,834] [2024-11-16 02:24:01,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:01,343 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:24:01,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01 WrapperNode [2024-11-16 02:24:01,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:01,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:01,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:24:01,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:24:01,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,383 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-16 02:24:01,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:01,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:24:01,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:24:01,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:24:01,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,419 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 3, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-16 02:24:01,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,457 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:24:01,466 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:24:01,466 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:24:01,470 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:24:01,471 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (1/1) ... [2024-11-16 02:24:01,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:01,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:01,504 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) [2024-11-16 02:24:01,507 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 [2024-11-16 02:24:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:24:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:24:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:24:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:24:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:24:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:24:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:24:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:24:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:24:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:24:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:24:01,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:24:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:24:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:24:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:24:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:24:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 02:24:01,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 02:24:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:24:01,641 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:24:01,644 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:24:01,836 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: 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_~#C~0#1.base, main_~#C~0#1.offset);havoc main_~#C~0#1.base, main_~#C~0#1.offset; [2024-11-16 02:24:01,859 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-16 02:24:01,860 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:24:01,874 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:24:01,875 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:24:01,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:01 BoogieIcfgContainer [2024-11-16 02:24:01,876 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:24:01,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:24:01,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:24:01,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:24:01,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:24:01" (1/3) ... [2024-11-16 02:24:01,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea92efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:01, skipping insertion in model container [2024-11-16 02:24:01,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:01" (2/3) ... [2024-11-16 02:24:01,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea92efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:01, skipping insertion in model container [2024-11-16 02:24:01,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:01" (3/3) ... [2024-11-16 02:24:01,886 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2024-11-16 02:24:01,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:24:01,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:24:01,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:24:01,979 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;@444cdcbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:24:01,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:24:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:24:01,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:01,995 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:01,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:02,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1783949312, now seen corresponding path program 1 times [2024-11-16 02:24:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455300395] [2024-11-16 02:24:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:02,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:24:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455300395] [2024-11-16 02:24:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455300395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:24:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247881753] [2024-11-16 02:24:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:02,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:24:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:24:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:24:02,204 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:02,220 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2024-11-16 02:24:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:24:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 02:24:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:02,226 INFO L225 Difference]: With dead ends: 57 [2024-11-16 02:24:02,227 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 02:24:02,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:24:02,233 INFO L432 NwaCegarLoop]: 35 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, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:02,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:02,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 02:24:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-16 02:24:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 02:24:02,264 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2024-11-16 02:24:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:02,265 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 02:24:02,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 02:24:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:24:02,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:02,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:02,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:24:02,267 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:02,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash -127927141, now seen corresponding path program 1 times [2024-11-16 02:24:02,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638101369] [2024-11-16 02:24:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:24:02,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:02,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638101369] [2024-11-16 02:24:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638101369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:02,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:24:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181270558] [2024-11-16 02:24:02,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:02,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:24:02,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:24:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:24:02,394 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:02,429 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2024-11-16 02:24:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:24:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 02:24:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:02,435 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:24:02,435 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:24:02,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:24:02,440 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:02,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:24:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-16 02:24:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-16 02:24:02,451 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2024-11-16 02:24:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:02,451 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-16 02:24:02,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-16 02:24:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:24:02,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:02,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:02,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:24:02,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:02,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:02,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1703227962, now seen corresponding path program 1 times [2024-11-16 02:24:02,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:02,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521078859] [2024-11-16 02:24:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:02,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521078859] [2024-11-16 02:24:02,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521078859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238434673] [2024-11-16 02:24:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:02,652 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) [2024-11-16 02:24:02,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:24:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:02,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:24:02,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:02,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:02,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238434673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:02,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:24:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284244043] [2024-11-16 02:24:02,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:02,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:24:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:24:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:02,843 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:02,895 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-11-16 02:24:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:24:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:24:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:02,897 INFO L225 Difference]: With dead ends: 72 [2024-11-16 02:24:02,897 INFO L226 Difference]: Without dead ends: 48 [2024-11-16 02:24:02,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:02,899 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:02,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 101 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-16 02:24:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-16 02:24:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-16 02:24:02,913 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2024-11-16 02:24:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:02,913 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-16 02:24:02,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-16 02:24:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 02:24:02,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:02,915 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:02,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:24:03,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:03,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:03,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1557027223, now seen corresponding path program 2 times [2024-11-16 02:24:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982624207] [2024-11-16 02:24:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:24:03,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:03,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982624207] [2024-11-16 02:24:03,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982624207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:03,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475741866] [2024-11-16 02:24:03,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:24:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:03,365 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) [2024-11-16 02:24:03,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:24:03,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:24:03,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:03,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:24:03,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:24:03,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:24:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475741866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:03,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 02:24:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104194439] [2024-11-16 02:24:03,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:03,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 02:24:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 02:24:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:24:03,622 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:03,732 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2024-11-16 02:24:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:24:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 02:24:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:03,734 INFO L225 Difference]: With dead ends: 120 [2024-11-16 02:24:03,735 INFO L226 Difference]: Without dead ends: 84 [2024-11-16 02:24:03,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:24:03,736 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 80 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:03,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 116 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-16 02:24:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-16 02:24:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2024-11-16 02:24:03,751 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 39 [2024-11-16 02:24:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:03,752 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2024-11-16 02:24:03,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2024-11-16 02:24:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 02:24:03,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:03,754 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:03,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:24:03,955 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,SelfDestructingSolverStorable3 [2024-11-16 02:24:03,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:03,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1013409169, now seen corresponding path program 3 times [2024-11-16 02:24:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:03,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741449450] [2024-11-16 02:24:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 02:24:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741449450] [2024-11-16 02:24:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741449450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216063132] [2024-11-16 02:24:04,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:24:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:04,416 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) [2024-11-16 02:24:04,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:24:05,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-16 02:24:05,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:05,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:24:05,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-16 02:24:05,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-16 02:24:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216063132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:05,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 02:24:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484787151] [2024-11-16 02:24:05,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:05,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:24:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:24:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:24:05,908 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:06,095 INFO L93 Difference]: Finished difference Result 216 states and 279 transitions. [2024-11-16 02:24:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:24:06,095 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 02:24:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:06,097 INFO L225 Difference]: With dead ends: 216 [2024-11-16 02:24:06,099 INFO L226 Difference]: Without dead ends: 156 [2024-11-16 02:24:06,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:24:06,101 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 123 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:06,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 132 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:24:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-16 02:24:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-16 02:24:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.1710526315789473) internal successors, (178), 152 states have internal predecessors, (178), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 182 transitions. [2024-11-16 02:24:06,139 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 182 transitions. Word has length 75 [2024-11-16 02:24:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:06,139 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 182 transitions. [2024-11-16 02:24:06,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 182 transitions. [2024-11-16 02:24:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-16 02:24:06,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:06,143 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:06,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:24:06,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:06,344 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 812659333, now seen corresponding path program 4 times [2024-11-16 02:24:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840137438] [2024-11-16 02:24:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-16 02:24:07,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:07,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840137438] [2024-11-16 02:24:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840137438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:07,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667660541] [2024-11-16 02:24:07,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:24:07,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:07,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:07,352 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) [2024-11-16 02:24:07,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:24:07,714 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:24:07,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:07,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:24:07,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-16 02:24:07,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-16 02:24:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667660541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:08,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-16 02:24:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683085938] [2024-11-16 02:24:08,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:08,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:24:08,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:24:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:24:08,758 INFO L87 Difference]: Start difference. First operand 156 states and 182 transitions. Second operand has 49 states, 49 states have (on average 5.040816326530612) internal successors, (247), 49 states have internal predecessors, (247), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:09,143 INFO L93 Difference]: Finished difference Result 408 states and 531 transitions. [2024-11-16 02:24:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 02:24:09,144 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.040816326530612) internal successors, (247), 49 states have internal predecessors, (247), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-16 02:24:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:09,146 INFO L225 Difference]: With dead ends: 408 [2024-11-16 02:24:09,146 INFO L226 Difference]: Without dead ends: 300 [2024-11-16 02:24:09,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:24:09,149 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 220 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:09,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 287 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:24:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-16 02:24:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2024-11-16 02:24:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 1.1689189189189189) internal successors, (346), 296 states have internal predecessors, (346), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 350 transitions. [2024-11-16 02:24:09,164 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 350 transitions. Word has length 147 [2024-11-16 02:24:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:09,165 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 350 transitions. [2024-11-16 02:24:09,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.040816326530612) internal successors, (247), 49 states have internal predecessors, (247), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 350 transitions. [2024-11-16 02:24:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-16 02:24:09,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:09,169 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:09,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:24:09,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:09,374 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:09,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash -962944915, now seen corresponding path program 5 times [2024-11-16 02:24:09,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:09,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714981612] [2024-11-16 02:24:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:09,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:12,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:12,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714981612] [2024-11-16 02:24:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714981612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996381686] [2024-11-16 02:24:12,326 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:24:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:12,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:12,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:12,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process