./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 10:05:32,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 10:05:32,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 10:05:32,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 10:05:32,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 10:05:32,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 10:05:32,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 10:05:32,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 10:05:32,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 10:05:32,120 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 10:05:32,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 10:05:32,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 10:05:32,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 10:05:32,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 10:05:32,123 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 10:05:32,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 10:05:32,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 10:05:32,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 10:05:32,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 10:05:32,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 10:05:32,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 10:05:32,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 10:05:32,128 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 10:05:32,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 10:05:32,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 10:05:32,129 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 10:05:32,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 10:05:32,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 10:05:32,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 10:05:32,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:05:32,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 10:05:32,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 10:05:32,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 10:05:32,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 10:05:32,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 10:05:32,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 10:05:32,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 10:05:32,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 10:05:32,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 10:05:32,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 [2024-11-16 10:05:32,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 10:05:32,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 10:05:32,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 10:05:32,393 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 10:05:32,394 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 10:05:32,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-16 10:05:33,791 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 10:05:34,044 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 10:05:34,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-16 10:05:34,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f3323d0/cfc40f83deff47b48c809ddb1bb223bf/FLAGa12368878 [2024-11-16 10:05:34,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f3323d0/cfc40f83deff47b48c809ddb1bb223bf [2024-11-16 10:05:34,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 10:05:34,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 10:05:34,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 10:05:34,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 10:05:34,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 10:05:34,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:34,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53073a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34, skipping insertion in model container [2024-11-16 10:05:34,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:34,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 10:05:34,415 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2024-11-16 10:05:34,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:05:34,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 10:05:34,670 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2024-11-16 10:05:34,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:05:34,763 INFO L204 MainTranslator]: Completed translation [2024-11-16 10:05:34,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34 WrapperNode [2024-11-16 10:05:34,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 10:05:34,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 10:05:34,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 10:05:34,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 10:05:34,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:34,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,288 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3714 [2024-11-16 10:05:35,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 10:05:35,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 10:05:35,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 10:05:35,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 10:05:35,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,537 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 8, 24, 29]. 46 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 30 writes are split as follows [0, 4, 12, 14]. [2024-11-16 10:05:35,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,656 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 10:05:35,811 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 10:05:35,811 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 10:05:35,811 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 10:05:35,812 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (1/1) ... [2024-11-16 10:05:35,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:05:35,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:35,842 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 10:05:35,844 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 10:05:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 10:05:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 10:05:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 10:05:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 10:05:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 10:05:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 10:05:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 10:05:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 10:05:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 10:05:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 10:05:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 10:05:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 10:05:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 10:05:36,148 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 10:05:36,150 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 10:05:38,269 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L144: call ULTIMATE.dealloc(main_~#state_13~0#1.base, main_~#state_13~0#1.offset);havoc main_~#state_13~0#1.base, main_~#state_13~0#1.offset;call ULTIMATE.dealloc(main_~#state_15~0#1.base, main_~#state_15~0#1.offset);havoc main_~#state_15~0#1.base, main_~#state_15~0#1.offset;call ULTIMATE.dealloc(main_~#state_249~0#1.base, main_~#state_249~0#1.offset);havoc main_~#state_249~0#1.base, main_~#state_249~0#1.offset; [2024-11-16 10:05:38,691 INFO L? ?]: Removed 1909 outVars from TransFormulas that were not future-live. [2024-11-16 10:05:38,692 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 10:05:38,833 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 10:05:38,833 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 10:05:38,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:05:38 BoogieIcfgContainer [2024-11-16 10:05:38,837 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 10:05:38,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 10:05:38,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 10:05:38,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 10:05:38,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:05:34" (1/3) ... [2024-11-16 10:05:38,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ee29d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:05:38, skipping insertion in model container [2024-11-16 10:05:38,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:05:34" (2/3) ... [2024-11-16 10:05:38,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ee29d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:05:38, skipping insertion in model container [2024-11-16 10:05:38,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:05:38" (3/3) ... [2024-11-16 10:05:38,847 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-11-16 10:05:38,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 10:05:38,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 10:05:38,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 10:05:38,950 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;@474d0d1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 10:05:38,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 10:05:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 1152 states, 1144 states have (on average 1.5026223776223777) internal successors, (1719), 1145 states have internal predecessors, (1719), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-16 10:05:38,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:38,977 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1] [2024-11-16 10:05:38,978 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:38,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash 268083584, now seen corresponding path program 1 times [2024-11-16 10:05:38,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:38,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551352349] [2024-11-16 10:05:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:38,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:39,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-16 10:05:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:39,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-11-16 10:05:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:39,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-11-16 10:05:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:39,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-11-16 10:05:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:39,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:05:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:05:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551352349] [2024-11-16 10:05:39,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551352349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:05:39,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:05:39,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 10:05:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192201060] [2024-11-16 10:05:39,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:05:39,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 10:05:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 10:05:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 10:05:39,492 INFO L87 Difference]: Start difference. First operand has 1152 states, 1144 states have (on average 1.5026223776223777) internal successors, (1719), 1145 states have internal predecessors, (1719), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:39,854 INFO L93 Difference]: Finished difference Result 2291 states and 3447 transitions. [2024-11-16 10:05:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 10:05:39,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 336 [2024-11-16 10:05:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:39,874 INFO L225 Difference]: With dead ends: 2291 [2024-11-16 10:05:39,875 INFO L226 Difference]: Without dead ends: 1147 [2024-11-16 10:05:39,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 10:05:39,889 INFO L432 NwaCegarLoop]: 1436 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:39,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1436 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:05:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-11-16 10:05:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2024-11-16 10:05:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1140 states have (on average 1.4859649122807017) internal successors, (1694), 1140 states have internal predecessors, (1694), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1704 transitions. [2024-11-16 10:05:39,965 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1704 transitions. Word has length 336 [2024-11-16 10:05:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:39,966 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1704 transitions. [2024-11-16 10:05:39,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1704 transitions. [2024-11-16 10:05:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-16 10:05:39,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:39,971 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2024-11-16 10:05:39,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 10:05:39,971 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:39,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 669066668, now seen corresponding path program 1 times [2024-11-16 10:05:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:39,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965058601] [2024-11-16 10:05:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:40,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-11-16 10:05:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:40,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-11-16 10:05:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:40,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-11-16 10:05:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:40,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-11-16 10:05:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:40,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-11-16 10:05:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:05:40,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:40,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965058601] [2024-11-16 10:05:40,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965058601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:05:40,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:05:40,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 10:05:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386748998] [2024-11-16 10:05:40,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:05:40,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 10:05:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 10:05:40,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 10:05:40,508 INFO L87 Difference]: Start difference. First operand 1147 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:40,863 INFO L93 Difference]: Finished difference Result 2292 states and 3406 transitions. [2024-11-16 10:05:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 10:05:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 339 [2024-11-16 10:05:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:40,868 INFO L225 Difference]: With dead ends: 2292 [2024-11-16 10:05:40,868 INFO L226 Difference]: Without dead ends: 1153 [2024-11-16 10:05:40,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 10:05:40,871 INFO L432 NwaCegarLoop]: 1434 mSDtfsCounter, 6 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:40,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2865 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:05:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-16 10:05:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1149. [2024-11-16 10:05:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1142 states have (on average 1.4851138353765323) internal successors, (1696), 1142 states have internal predecessors, (1696), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1706 transitions. [2024-11-16 10:05:40,893 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1706 transitions. Word has length 339 [2024-11-16 10:05:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:40,894 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1706 transitions. [2024-11-16 10:05:40,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1706 transitions. [2024-11-16 10:05:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-16 10:05:40,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:40,899 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:05:40,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 10:05:40,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:40,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:40,900 INFO L85 PathProgramCache]: Analyzing trace with hash 253996078, now seen corresponding path program 1 times [2024-11-16 10:05:40,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:40,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948835085] [2024-11-16 10:05:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-11-16 10:05:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-11-16 10:05:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-11-16 10:05:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-11-16 10:05:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-11-16 10:05:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:05:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948835085] [2024-11-16 10:05:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948835085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657952390] [2024-11-16 10:05:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:41,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:41,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:41,377 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 10:05:41,383 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 10:05:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:41,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 10:05:41,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:05:41,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:05:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:05:41,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657952390] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:41,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:05:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-11-16 10:05:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947159574] [2024-11-16 10:05:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:05:41,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 10:05:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 10:05:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:05:41,967 INFO L87 Difference]: Start difference. First operand 1149 states and 1706 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:42,303 INFO L93 Difference]: Finished difference Result 2108 states and 3130 transitions. [2024-11-16 10:05:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 10:05:42,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 343 [2024-11-16 10:05:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:42,307 INFO L225 Difference]: With dead ends: 2108 [2024-11-16 10:05:42,307 INFO L226 Difference]: Without dead ends: 1151 [2024-11-16 10:05:42,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:05:42,309 INFO L432 NwaCegarLoop]: 1434 mSDtfsCounter, 6 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:42,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2860 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:05:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-11-16 10:05:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2024-11-16 10:05:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1144 states have (on average 1.4842657342657342) internal successors, (1698), 1144 states have internal predecessors, (1698), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1708 transitions. [2024-11-16 10:05:42,323 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1708 transitions. Word has length 343 [2024-11-16 10:05:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:42,324 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1708 transitions. [2024-11-16 10:05:42,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1708 transitions. [2024-11-16 10:05:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-16 10:05:42,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:42,327 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:05:42,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 10:05:42,531 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 10:05:42,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:42,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -639388496, now seen corresponding path program 1 times [2024-11-16 10:05:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172709052] [2024-11-16 10:05:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:42,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-11-16 10:05:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:42,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-11-16 10:05:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:42,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-11-16 10:05:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:42,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-16 10:05:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:42,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-11-16 10:05:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:05:43,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:43,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172709052] [2024-11-16 10:05:43,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172709052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:43,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348636736] [2024-11-16 10:05:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:43,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:43,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:43,008 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 10:05:43,009 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 10:05:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:43,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 10:05:43,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:05:43,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:05:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:05:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348636736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:05:44,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:05:44,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 8] total 12 [2024-11-16 10:05:44,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80435114] [2024-11-16 10:05:44,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:05:44,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 10:05:44,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 10:05:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:05:44,265 INFO L87 Difference]: Start difference. First operand 1151 states and 1708 transitions. Second operand has 12 states, 12 states have (on average 48.416666666666664) internal successors, (581), 12 states have internal predecessors, (581), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:05:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:47,738 INFO L93 Difference]: Finished difference Result 2715 states and 4031 transitions. [2024-11-16 10:05:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 10:05:47,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 48.416666666666664) internal successors, (581), 12 states have internal predecessors, (581), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 347 [2024-11-16 10:05:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:47,749 INFO L225 Difference]: With dead ends: 2715 [2024-11-16 10:05:47,750 INFO L226 Difference]: Without dead ends: 1574 [2024-11-16 10:05:47,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-16 10:05:47,753 INFO L432 NwaCegarLoop]: 955 mSDtfsCounter, 3521 mSDsluCounter, 6533 mSDsCounter, 0 mSdLazyCounter, 6912 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3531 SdHoareTripleChecker+Valid, 7488 SdHoareTripleChecker+Invalid, 6918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:47,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3531 Valid, 7488 Invalid, 6918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 6912 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 10:05:47,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2024-11-16 10:05:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1175. [2024-11-16 10:05:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1168 states have (on average 1.4828767123287672) internal successors, (1732), 1168 states have internal predecessors, (1732), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1742 transitions. [2024-11-16 10:05:47,836 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1742 transitions. Word has length 347 [2024-11-16 10:05:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:47,836 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1742 transitions. [2024-11-16 10:05:47,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.416666666666664) internal successors, (581), 12 states have internal predecessors, (581), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:05:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1742 transitions. [2024-11-16 10:05:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-16 10:05:47,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:47,840 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:05:47,860 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 10:05:48,041 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 10:05:48,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:48,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1741299184, now seen corresponding path program 1 times [2024-11-16 10:05:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923943890] [2024-11-16 10:05:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:48,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-11-16 10:05:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:48,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-11-16 10:05:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:48,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-11-16 10:05:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:48,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-11-16 10:05:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:48,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-11-16 10:05:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:05:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923943890] [2024-11-16 10:05:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923943890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499746516] [2024-11-16 10:05:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:48,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:48,560 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 10:05:48,561 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 10:05:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:49,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 10:05:49,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:05:49,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:05:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 10:05:49,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499746516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:05:49,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:05:49,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-11-16 10:05:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62032916] [2024-11-16 10:05:49,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:05:49,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 10:05:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 10:05:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 10:05:49,171 INFO L87 Difference]: Start difference. First operand 1175 states and 1742 transitions. Second operand has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:05:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:49,937 INFO L93 Difference]: Finished difference Result 2362 states and 3505 transitions. [2024-11-16 10:05:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 10:05:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 352 [2024-11-16 10:05:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:49,942 INFO L225 Difference]: With dead ends: 2362 [2024-11-16 10:05:49,942 INFO L226 Difference]: Without dead ends: 1203 [2024-11-16 10:05:49,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 10:05:49,944 INFO L432 NwaCegarLoop]: 1442 mSDtfsCounter, 54 mSDsluCounter, 7174 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8616 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:49,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 8616 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 10:05:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-16 10:05:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1199. [2024-11-16 10:05:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1192 states have (on average 1.4798657718120805) internal successors, (1764), 1192 states have internal predecessors, (1764), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1774 transitions. [2024-11-16 10:05:49,965 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1774 transitions. Word has length 352 [2024-11-16 10:05:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:49,965 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1774 transitions. [2024-11-16 10:05:49,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.888888888888886) internal successors, (440), 9 states have internal predecessors, (440), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:05:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1774 transitions. [2024-11-16 10:05:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-16 10:05:49,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:49,967 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2024-11-16 10:05:49,989 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 10:05:50,168 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 10:05:50,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:50,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 718904808, now seen corresponding path program 2 times [2024-11-16 10:05:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693336197] [2024-11-16 10:05:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:50,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-11-16 10:05:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:50,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-11-16 10:05:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:50,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-11-16 10:05:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:50,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-11-16 10:05:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:50,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-11-16 10:05:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 10:05:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693336197] [2024-11-16 10:05:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693336197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:50,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215340571] [2024-11-16 10:05:50,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 10:05:50,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:50,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:50,619 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 10:05:50,630 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 10:05:51,103 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 10:05:51,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 10:05:51,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 10:05:51,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:05:51,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:05:51,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215340571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:05:51,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:05:51,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-16 10:05:51,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419977116] [2024-11-16 10:05:51,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:05:51,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:05:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:51,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:05:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 10:05:51,200 INFO L87 Difference]: Start difference. First operand 1199 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:52,196 INFO L93 Difference]: Finished difference Result 2375 states and 3518 transitions. [2024-11-16 10:05:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:05:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 368 [2024-11-16 10:05:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:52,200 INFO L225 Difference]: With dead ends: 2375 [2024-11-16 10:05:52,200 INFO L226 Difference]: Without dead ends: 1205 [2024-11-16 10:05:52,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 10:05:52,202 INFO L432 NwaCegarLoop]: 876 mSDtfsCounter, 1696 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:52,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 1743 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 10:05:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2024-11-16 10:05:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1201. [2024-11-16 10:05:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1194 states have (on average 1.4790619765494137) internal successors, (1766), 1194 states have internal predecessors, (1766), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1776 transitions. [2024-11-16 10:05:52,224 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1776 transitions. Word has length 368 [2024-11-16 10:05:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:52,224 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1776 transitions. [2024-11-16 10:05:52,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1776 transitions. [2024-11-16 10:05:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-16 10:05:52,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:52,227 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-16 10:05:52,250 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 10:05:52,431 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 10:05:52,432 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:52,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1258758294, now seen corresponding path program 1 times [2024-11-16 10:05:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231612978] [2024-11-16 10:05:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:52,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:52,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-11-16 10:05:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:52,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-11-16 10:05:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:52,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-11-16 10:05:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:52,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-11-16 10:05:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:52,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-11-16 10:05:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 10:05:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231612978] [2024-11-16 10:05:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231612978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590658023] [2024-11-16 10:05:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:52,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:52,798 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 10:05:52,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 10:05:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:53,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 10:05:53,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 10:05:53,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:05:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:05:53,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590658023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:05:53,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:05:53,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 15 [2024-11-16 10:05:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799636305] [2024-11-16 10:05:53,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:05:53,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 10:05:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 10:05:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-16 10:05:53,535 INFO L87 Difference]: Start difference. First operand 1201 states and 1776 transitions. Second operand has 15 states, 15 states have (on average 24.8) internal successors, (372), 15 states have internal predecessors, (372), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:05:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:54,520 INFO L93 Difference]: Finished difference Result 2390 states and 3538 transitions. [2024-11-16 10:05:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 10:05:54,521 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 24.8) internal successors, (372), 15 states have internal predecessors, (372), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 372 [2024-11-16 10:05:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:54,524 INFO L225 Difference]: With dead ends: 2390 [2024-11-16 10:05:54,524 INFO L226 Difference]: Without dead ends: 1211 [2024-11-16 10:05:54,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-16 10:05:54,526 INFO L432 NwaCegarLoop]: 1449 mSDtfsCounter, 79 mSDsluCounter, 11541 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 12990 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:54,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 12990 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 10:05:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-16 10:05:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1207. [2024-11-16 10:05:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1200 states have (on average 1.4783333333333333) internal successors, (1774), 1200 states have internal predecessors, (1774), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1784 transitions. [2024-11-16 10:05:54,543 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1784 transitions. Word has length 372 [2024-11-16 10:05:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:54,543 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1784 transitions. [2024-11-16 10:05:54,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.8) internal successors, (372), 15 states have internal predecessors, (372), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:05:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1784 transitions. [2024-11-16 10:05:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-16 10:05:54,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:54,545 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-16 10:05:54,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 10:05:54,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:54,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:54,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash -390024920, now seen corresponding path program 2 times [2024-11-16 10:05:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121852634] [2024-11-16 10:05:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:55,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:05:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:55,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:05:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:55,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-11-16 10:05:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:55,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-11-16 10:05:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:55,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-11-16 10:05:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:05:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121852634] [2024-11-16 10:05:55,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121852634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9857679] [2024-11-16 10:05:55,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 10:05:55,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:55,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:55,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:05:55,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 10:05:55,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 10:05:55,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 10:05:55,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 10:05:55,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:05:56,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:05:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9857679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:05:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:05:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-16 10:05:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791152294] [2024-11-16 10:05:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:05:56,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 10:05:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:05:56,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 10:05:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-16 10:05:56,067 INFO L87 Difference]: Start difference. First operand 1207 states and 1784 transitions. Second operand has 7 states, 7 states have (on average 46.714285714285715) internal successors, (327), 7 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:05:57,713 INFO L93 Difference]: Finished difference Result 1921 states and 2840 transitions. [2024-11-16 10:05:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 10:05:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 46.714285714285715) internal successors, (327), 7 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 376 [2024-11-16 10:05:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:05:57,723 INFO L225 Difference]: With dead ends: 1921 [2024-11-16 10:05:57,723 INFO L226 Difference]: Without dead ends: 1211 [2024-11-16 10:05:57,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-16 10:05:57,725 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 1456 mSDsluCounter, 3566 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:05:57,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 4458 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 10:05:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-16 10:05:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2024-11-16 10:05:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1204 states have (on average 1.4767441860465116) internal successors, (1778), 1204 states have internal predecessors, (1778), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:05:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1788 transitions. [2024-11-16 10:05:57,760 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1788 transitions. Word has length 376 [2024-11-16 10:05:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:05:57,761 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1788 transitions. [2024-11-16 10:05:57,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.714285714285715) internal successors, (327), 7 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:05:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1788 transitions. [2024-11-16 10:05:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-16 10:05:57,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:05:57,765 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:05:57,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 10:05:57,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:57,966 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:05:57,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:05:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 939183679, now seen corresponding path program 1 times [2024-11-16 10:05:57,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:05:57,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338776483] [2024-11-16 10:05:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:57,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:05:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:58,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:05:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:58,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:05:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:58,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-11-16 10:05:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:58,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-11-16 10:05:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:58,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-11-16 10:05:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:05:58,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:05:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338776483] [2024-11-16 10:05:58,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338776483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:05:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002970239] [2024-11-16 10:05:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:05:58,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:05:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:05:58,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:05:58,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 10:05:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:05:59,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-16 10:05:59,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:05:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:05:59,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002970239] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:00,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:00,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 11] total 24 [2024-11-16 10:06:00,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078836460] [2024-11-16 10:06:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:00,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 10:06:00,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 10:06:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-16 10:06:00,433 INFO L87 Difference]: Start difference. First operand 1211 states and 1788 transitions. Second operand has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:03,241 INFO L93 Difference]: Finished difference Result 2484 states and 3669 transitions. [2024-11-16 10:06:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 10:06:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 377 [2024-11-16 10:06:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:03,245 INFO L225 Difference]: With dead ends: 2484 [2024-11-16 10:06:03,245 INFO L226 Difference]: Without dead ends: 1213 [2024-11-16 10:06:03,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2024-11-16 10:06:03,248 INFO L432 NwaCegarLoop]: 899 mSDtfsCounter, 10880 mSDsluCounter, 5266 mSDsCounter, 0 mSdLazyCounter, 5852 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10884 SdHoareTripleChecker+Valid, 6165 SdHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 5852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:03,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10884 Valid, 6165 Invalid, 5907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 5852 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 10:06:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-16 10:06:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2024-11-16 10:06:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1206 states have (on average 1.4751243781094527) internal successors, (1779), 1206 states have internal predecessors, (1779), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1789 transitions. [2024-11-16 10:06:03,273 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1789 transitions. Word has length 377 [2024-11-16 10:06:03,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:03,273 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1789 transitions. [2024-11-16 10:06:03,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1789 transitions. [2024-11-16 10:06:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-16 10:06:03,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:03,276 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:03,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 10:06:03,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:03,481 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:03,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash -100199634, now seen corresponding path program 1 times [2024-11-16 10:06:03,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:03,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103701278] [2024-11-16 10:06:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:03,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:03,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:03,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:03,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-16 10:06:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:03,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-11-16 10:06:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:03,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-11-16 10:06:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:03,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:03,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103701278] [2024-11-16 10:06:03,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103701278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:03,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374361347] [2024-11-16 10:06:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:03,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:03,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:03,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:03,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 10:06:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:04,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 10:06:04,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 10:06:05,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374361347] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:05,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-16 10:06:05,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226505503] [2024-11-16 10:06:05,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:05,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:05,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:05,348 INFO L87 Difference]: Start difference. First operand 1213 states and 1789 transitions. Second operand has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:06,961 INFO L93 Difference]: Finished difference Result 1931 states and 2847 transitions. [2024-11-16 10:06:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:06,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 378 [2024-11-16 10:06:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:06,965 INFO L225 Difference]: With dead ends: 1931 [2024-11-16 10:06:06,965 INFO L226 Difference]: Without dead ends: 1215 [2024-11-16 10:06:06,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-16 10:06:06,966 INFO L432 NwaCegarLoop]: 872 mSDtfsCounter, 3369 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:06,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3373 Valid, 3495 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3334 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 10:06:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-16 10:06:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2024-11-16 10:06:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1208 states have (on average 1.4735099337748345) internal successors, (1780), 1208 states have internal predecessors, (1780), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1790 transitions. [2024-11-16 10:06:06,982 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1790 transitions. Word has length 378 [2024-11-16 10:06:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:06,983 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1790 transitions. [2024-11-16 10:06:06,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1790 transitions. [2024-11-16 10:06:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-16 10:06:06,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:06,985 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:07,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 10:06:07,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 10:06:07,190 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:07,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1451789753, now seen corresponding path program 1 times [2024-11-16 10:06:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690565404] [2024-11-16 10:06:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:07,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:07,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:07,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-16 10:06:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:07,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-11-16 10:06:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:07,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-11-16 10:06:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690565404] [2024-11-16 10:06:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690565404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767331297] [2024-11-16 10:06:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:07,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:07,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:07,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:07,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 10:06:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:08,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 10:06:08,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-16 10:06:08,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767331297] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:08,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-16 10:06:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072162824] [2024-11-16 10:06:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:08,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:08,984 INFO L87 Difference]: Start difference. First operand 1215 states and 1790 transitions. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:10,392 INFO L93 Difference]: Finished difference Result 1935 states and 2849 transitions. [2024-11-16 10:06:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:10,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 379 [2024-11-16 10:06:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:10,396 INFO L225 Difference]: With dead ends: 1935 [2024-11-16 10:06:10,396 INFO L226 Difference]: Without dead ends: 1217 [2024-11-16 10:06:10,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-16 10:06:10,399 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 6744 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6748 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:10,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6748 Valid, 3500 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3334 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 10:06:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-16 10:06:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2024-11-16 10:06:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1210 states have (on average 1.471900826446281) internal successors, (1781), 1210 states have internal predecessors, (1781), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1791 transitions. [2024-11-16 10:06:10,421 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1791 transitions. Word has length 379 [2024-11-16 10:06:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:10,421 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1791 transitions. [2024-11-16 10:06:10,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1791 transitions. [2024-11-16 10:06:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-16 10:06:10,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:10,423 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:10,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 10:06:10,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:10,625 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:10,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 208936436, now seen corresponding path program 1 times [2024-11-16 10:06:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723620227] [2024-11-16 10:06:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:10,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:10,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:10,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-16 10:06:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:10,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-11-16 10:06:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:10,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-11-16 10:06:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:10,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:10,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723620227] [2024-11-16 10:06:10,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723620227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:10,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127963483] [2024-11-16 10:06:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:10,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:10,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:10,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:10,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 10:06:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:11,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-16 10:06:11,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 10:06:12,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127963483] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:12,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 9] total 19 [2024-11-16 10:06:12,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152919404] [2024-11-16 10:06:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:12,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-16 10:06:12,301 INFO L87 Difference]: Start difference. First operand 1217 states and 1791 transitions. Second operand has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:14,215 INFO L93 Difference]: Finished difference Result 1938 states and 2850 transitions. [2024-11-16 10:06:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 380 [2024-11-16 10:06:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:14,221 INFO L225 Difference]: With dead ends: 1938 [2024-11-16 10:06:14,221 INFO L226 Difference]: Without dead ends: 1218 [2024-11-16 10:06:14,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-11-16 10:06:14,222 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 6660 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6662 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:14,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6662 Valid, 3482 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 10:06:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2024-11-16 10:06:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2024-11-16 10:06:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1211 states have (on average 1.4715111478117258) internal successors, (1782), 1211 states have internal predecessors, (1782), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1792 transitions. [2024-11-16 10:06:14,256 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1792 transitions. Word has length 380 [2024-11-16 10:06:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:14,257 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1792 transitions. [2024-11-16 10:06:14,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1792 transitions. [2024-11-16 10:06:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-16 10:06:14,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:14,261 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:14,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 10:06:14,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 10:06:14,466 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:14,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash 263850908, now seen corresponding path program 1 times [2024-11-16 10:06:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:14,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855883697] [2024-11-16 10:06:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:14,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-16 10:06:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-11-16 10:06:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-11-16 10:06:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:15,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855883697] [2024-11-16 10:06:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855883697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203441544] [2024-11-16 10:06:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:15,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:15,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:15,113 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:15,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 10:06:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:15,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 10:06:15,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 10:06:16,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:16,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203441544] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:16,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:16,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-16 10:06:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7796565] [2024-11-16 10:06:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:16,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:16,879 INFO L87 Difference]: Start difference. First operand 1218 states and 1792 transitions. Second operand has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:18,526 INFO L93 Difference]: Finished difference Result 1940 states and 2852 transitions. [2024-11-16 10:06:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:18,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 381 [2024-11-16 10:06:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:18,531 INFO L225 Difference]: With dead ends: 1940 [2024-11-16 10:06:18,531 INFO L226 Difference]: Without dead ends: 1219 [2024-11-16 10:06:18,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-16 10:06:18,533 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 3344 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:18,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3347 Valid, 3482 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 10:06:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-16 10:06:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2024-11-16 10:06:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1212 states have (on average 1.471122112211221) internal successors, (1783), 1212 states have internal predecessors, (1783), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1793 transitions. [2024-11-16 10:06:18,550 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1793 transitions. Word has length 381 [2024-11-16 10:06:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:18,551 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1793 transitions. [2024-11-16 10:06:18,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:18,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1793 transitions. [2024-11-16 10:06:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-16 10:06:18,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:18,553 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:18,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:18,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 10:06:18,758 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:18,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1603713332, now seen corresponding path program 1 times [2024-11-16 10:06:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:18,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643365420] [2024-11-16 10:06:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:18,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-11-16 10:06:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-16 10:06:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-11-16 10:06:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643365420] [2024-11-16 10:06:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643365420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991509906] [2024-11-16 10:06:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:19,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:19,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:19,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:19,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 10:06:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 10:06:19,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:06:20,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991509906] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-16 10:06:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788620988] [2024-11-16 10:06:21,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:21,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:21,059 INFO L87 Difference]: Start difference. First operand 1219 states and 1793 transitions. Second operand has 10 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:22,579 INFO L93 Difference]: Finished difference Result 1942 states and 2854 transitions. [2024-11-16 10:06:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:22,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 382 [2024-11-16 10:06:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:22,585 INFO L225 Difference]: With dead ends: 1942 [2024-11-16 10:06:22,585 INFO L226 Difference]: Without dead ends: 1220 [2024-11-16 10:06:22,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-16 10:06:22,586 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 3346 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:22,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 3482 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 10:06:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2024-11-16 10:06:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2024-11-16 10:06:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1213 states have (on average 1.4707337180544104) internal successors, (1784), 1213 states have internal predecessors, (1784), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1794 transitions. [2024-11-16 10:06:22,606 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1794 transitions. Word has length 382 [2024-11-16 10:06:22,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:22,606 INFO L471 AbstractCegarLoop]: Abstraction has 1220 states and 1794 transitions. [2024-11-16 10:06:22,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1794 transitions. [2024-11-16 10:06:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-16 10:06:22,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:22,608 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:22,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 10:06:22,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 10:06:22,813 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:22,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1970891409, now seen corresponding path program 1 times [2024-11-16 10:06:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632036600] [2024-11-16 10:06:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-11-16 10:06:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-11-16 10:06:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-11-16 10:06:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:23,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:23,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632036600] [2024-11-16 10:06:23,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632036600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:23,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286422596] [2024-11-16 10:06:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:23,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:23,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:23,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 10:06:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:23,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 10:06:23,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:24,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286422596] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:24,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:24,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 11 [2024-11-16 10:06:24,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212000333] [2024-11-16 10:06:24,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:24,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 10:06:24,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:24,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 10:06:24,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-16 10:06:24,621 INFO L87 Difference]: Start difference. First operand 1220 states and 1794 transitions. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:26,285 INFO L93 Difference]: Finished difference Result 2658 states and 3905 transitions. [2024-11-16 10:06:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 383 [2024-11-16 10:06:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:26,308 INFO L225 Difference]: With dead ends: 2658 [2024-11-16 10:06:26,312 INFO L226 Difference]: Without dead ends: 1934 [2024-11-16 10:06:26,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:06:26,315 INFO L432 NwaCegarLoop]: 1041 mSDtfsCounter, 3587 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:26,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3593 Valid, 2954 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 10:06:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2024-11-16 10:06:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1931. [2024-11-16 10:06:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1919 states have (on average 1.4700364773319436) internal successors, (2821), 1919 states have internal predecessors, (2821), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2841 transitions. [2024-11-16 10:06:26,397 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2841 transitions. Word has length 383 [2024-11-16 10:06:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:26,398 INFO L471 AbstractCegarLoop]: Abstraction has 1931 states and 2841 transitions. [2024-11-16 10:06:26,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2841 transitions. [2024-11-16 10:06:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-16 10:06:26,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:26,404 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:26,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:26,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 10:06:26,606 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:26,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1457135330, now seen corresponding path program 1 times [2024-11-16 10:06:26,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:26,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979576791] [2024-11-16 10:06:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:26,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:26,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:26,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-11-16 10:06:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:26,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-11-16 10:06:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:26,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-11-16 10:06:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:26,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-11-16 10:06:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979576791] [2024-11-16 10:06:26,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979576791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886953000] [2024-11-16 10:06:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:26,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:26,898 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:26,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 10:06:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 10:06:27,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 10:06:28,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886953000] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:28,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:28,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2024-11-16 10:06:28,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416158299] [2024-11-16 10:06:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:28,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:28,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-16 10:06:28,489 INFO L87 Difference]: Start difference. First operand 1931 states and 2841 transitions. Second operand has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:31,578 INFO L93 Difference]: Finished difference Result 3482 states and 5110 transitions. [2024-11-16 10:06:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 10:06:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 383 [2024-11-16 10:06:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:31,584 INFO L225 Difference]: With dead ends: 3482 [2024-11-16 10:06:31,584 INFO L226 Difference]: Without dead ends: 1935 [2024-11-16 10:06:31,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:06:31,586 INFO L432 NwaCegarLoop]: 885 mSDtfsCounter, 1696 mSDsluCounter, 6111 mSDsCounter, 0 mSdLazyCounter, 6638 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 6642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:31,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 6996 Invalid, 6642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6638 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 10:06:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2024-11-16 10:06:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1935. [2024-11-16 10:06:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1923 states have (on average 1.46801872074883) internal successors, (2823), 1923 states have internal predecessors, (2823), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2843 transitions. [2024-11-16 10:06:31,611 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2843 transitions. Word has length 383 [2024-11-16 10:06:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:31,611 INFO L471 AbstractCegarLoop]: Abstraction has 1935 states and 2843 transitions. [2024-11-16 10:06:31,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2843 transitions. [2024-11-16 10:06:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-16 10:06:31,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:31,614 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:31,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 10:06:31,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:31,815 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:31,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash -352038096, now seen corresponding path program 1 times [2024-11-16 10:06:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739721128] [2024-11-16 10:06:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-16 10:06:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-11-16 10:06:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-11-16 10:06:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-11-16 10:06:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:32,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:32,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739721128] [2024-11-16 10:06:32,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739721128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:32,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666548236] [2024-11-16 10:06:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:32,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:32,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:32,100 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:32,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 10:06:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-16 10:06:32,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:06:33,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:33,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666548236] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:33,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:33,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-16 10:06:33,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111909059] [2024-11-16 10:06:33,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:33,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:33,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:33,554 INFO L87 Difference]: Start difference. First operand 1935 states and 2843 transitions. Second operand has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:35,294 INFO L93 Difference]: Finished difference Result 3375 states and 4956 transitions. [2024-11-16 10:06:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 384 [2024-11-16 10:06:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:35,300 INFO L225 Difference]: With dead ends: 3375 [2024-11-16 10:06:35,300 INFO L226 Difference]: Without dead ends: 1937 [2024-11-16 10:06:35,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-16 10:06:35,302 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 1685 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 3496 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:35,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 3496 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 10:06:35,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2024-11-16 10:06:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1937. [2024-11-16 10:06:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1925 states have (on average 1.4675324675324675) internal successors, (2825), 1925 states have internal predecessors, (2825), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2845 transitions. [2024-11-16 10:06:35,326 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2845 transitions. Word has length 384 [2024-11-16 10:06:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:35,327 INFO L471 AbstractCegarLoop]: Abstraction has 1937 states and 2845 transitions. [2024-11-16 10:06:35,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2845 transitions. [2024-11-16 10:06:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-16 10:06:35,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:35,329 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:35,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 10:06:35,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 10:06:35,534 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:35,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash -555372675, now seen corresponding path program 1 times [2024-11-16 10:06:35,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:35,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134361000] [2024-11-16 10:06:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:35,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:35,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-11-16 10:06:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:35,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-11-16 10:06:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:35,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-11-16 10:06:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:35,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-11-16 10:06:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:35,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-11-16 10:06:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134361000] [2024-11-16 10:06:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134361000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511705619] [2024-11-16 10:06:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:35,892 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:35,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 10:06:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 10:06:36,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:37,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:37,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511705619] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:37,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:37,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2024-11-16 10:06:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855441919] [2024-11-16 10:06:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:37,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:37,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:37,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-16 10:06:37,451 INFO L87 Difference]: Start difference. First operand 1937 states and 2845 transitions. Second operand has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:40,179 INFO L93 Difference]: Finished difference Result 3536 states and 5176 transitions. [2024-11-16 10:06:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 10:06:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 385 [2024-11-16 10:06:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:40,186 INFO L225 Difference]: With dead ends: 3536 [2024-11-16 10:06:40,186 INFO L226 Difference]: Without dead ends: 1941 [2024-11-16 10:06:40,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:06:40,189 INFO L432 NwaCegarLoop]: 888 mSDtfsCounter, 1821 mSDsluCounter, 5226 mSDsCounter, 0 mSdLazyCounter, 5789 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 6114 SdHoareTripleChecker+Invalid, 5794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:40,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 6114 Invalid, 5794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5789 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 10:06:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2024-11-16 10:06:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1941. [2024-11-16 10:06:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1929 states have (on average 1.465526179367548) internal successors, (2827), 1929 states have internal predecessors, (2827), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2847 transitions. [2024-11-16 10:06:40,229 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2847 transitions. Word has length 385 [2024-11-16 10:06:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:40,229 INFO L471 AbstractCegarLoop]: Abstraction has 1941 states and 2847 transitions. [2024-11-16 10:06:40,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2847 transitions. [2024-11-16 10:06:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-16 10:06:40,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:40,232 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:40,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:40,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 10:06:40,437 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:40,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash -379580039, now seen corresponding path program 1 times [2024-11-16 10:06:40,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:40,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105097937] [2024-11-16 10:06:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:40,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-11-16 10:06:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:40,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-11-16 10:06:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:40,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-11-16 10:06:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:40,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-11-16 10:06:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:40,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-11-16 10:06:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105097937] [2024-11-16 10:06:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105097937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820078909] [2024-11-16 10:06:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:40,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:40,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:40,689 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:40,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 10:06:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 10:06:41,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:42,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820078909] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:42,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 7] total 16 [2024-11-16 10:06:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276987427] [2024-11-16 10:06:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:42,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 10:06:42,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 10:06:42,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-16 10:06:42,482 INFO L87 Difference]: Start difference. First operand 1941 states and 2847 transitions. Second operand has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:46,462 INFO L93 Difference]: Finished difference Result 4213 states and 6164 transitions. [2024-11-16 10:06:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 10:06:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 386 [2024-11-16 10:06:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:46,478 INFO L225 Difference]: With dead ends: 4213 [2024-11-16 10:06:46,479 INFO L226 Difference]: Without dead ends: 2664 [2024-11-16 10:06:46,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-16 10:06:46,483 INFO L432 NwaCegarLoop]: 2042 mSDtfsCounter, 1946 mSDsluCounter, 7138 mSDsCounter, 0 mSdLazyCounter, 6519 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 9180 SdHoareTripleChecker+Invalid, 6521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:46,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 9180 Invalid, 6521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6519 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-16 10:06:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-16 10:06:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2661. [2024-11-16 10:06:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2644 states have (on average 1.4644478063540092) internal successors, (3872), 2644 states have internal predecessors, (3872), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:06:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3902 transitions. [2024-11-16 10:06:46,528 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3902 transitions. Word has length 386 [2024-11-16 10:06:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:46,528 INFO L471 AbstractCegarLoop]: Abstraction has 2661 states and 3902 transitions. [2024-11-16 10:06:46,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3902 transitions. [2024-11-16 10:06:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-11-16 10:06:46,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:46,532 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:46,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 10:06:46,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:46,737 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:46,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -787685663, now seen corresponding path program 1 times [2024-11-16 10:06:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572039879] [2024-11-16 10:06:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-11-16 10:06:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-11-16 10:06:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-11-16 10:06:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-11-16 10:06:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-11-16 10:06:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572039879] [2024-11-16 10:06:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572039879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591748412] [2024-11-16 10:06:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:47,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:47,245 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:47,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 10:06:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:48,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 10:06:48,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:06:48,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591748412] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:49,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2024-11-16 10:06:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542840418] [2024-11-16 10:06:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:49,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 10:06:49,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 10:06:49,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:06:49,375 INFO L87 Difference]: Start difference. First operand 2661 states and 3902 transitions. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:51,017 INFO L93 Difference]: Finished difference Result 4834 states and 7085 transitions. [2024-11-16 10:06:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 10:06:51,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 387 [2024-11-16 10:06:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:51,025 INFO L225 Difference]: With dead ends: 4834 [2024-11-16 10:06:51,025 INFO L226 Difference]: Without dead ends: 2670 [2024-11-16 10:06:51,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-16 10:06:51,028 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 1364 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:51,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 2664 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 10:06:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2024-11-16 10:06:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2670. [2024-11-16 10:06:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2653 states have (on average 1.4640030154542027) internal successors, (3884), 2653 states have internal predecessors, (3884), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:06:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3914 transitions. [2024-11-16 10:06:51,067 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3914 transitions. Word has length 387 [2024-11-16 10:06:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:51,068 INFO L471 AbstractCegarLoop]: Abstraction has 2670 states and 3914 transitions. [2024-11-16 10:06:51,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3914 transitions. [2024-11-16 10:06:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-16 10:06:51,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:51,071 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:51,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 10:06:51,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:51,276 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:51,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1802809124, now seen corresponding path program 1 times [2024-11-16 10:06:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612347021] [2024-11-16 10:06:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-11-16 10:06:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-11-16 10:06:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-11-16 10:06:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-11-16 10:06:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-11-16 10:06:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612347021] [2024-11-16 10:06:51,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612347021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752728713] [2024-11-16 10:06:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:51,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:51,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:51,613 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:51,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 10:06:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:52,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-16 10:06:52,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:06:53,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:06:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752728713] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:53,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-11-16 10:06:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963107453] [2024-11-16 10:06:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:53,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 10:06:53,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 10:06:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:53,976 INFO L87 Difference]: Start difference. First operand 2670 states and 3914 transitions. Second operand has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:58,243 INFO L93 Difference]: Finished difference Result 5113 states and 7494 transitions. [2024-11-16 10:06:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 10:06:58,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 388 [2024-11-16 10:06:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:58,266 INFO L225 Difference]: With dead ends: 5113 [2024-11-16 10:06:58,266 INFO L226 Difference]: Without dead ends: 4368 [2024-11-16 10:06:58,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2024-11-16 10:06:58,279 INFO L432 NwaCegarLoop]: 1626 mSDtfsCounter, 3563 mSDsluCounter, 7612 mSDsCounter, 0 mSdLazyCounter, 5485 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3563 SdHoareTripleChecker+Valid, 9238 SdHoareTripleChecker+Invalid, 5588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 5485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:58,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3563 Valid, 9238 Invalid, 5588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 5485 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-16 10:06:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2024-11-16 10:06:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 2777. [2024-11-16 10:06:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2757 states have (on average 1.4613710554951034) internal successors, (4029), 2757 states have internal predecessors, (4029), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-16 10:06:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 4065 transitions. [2024-11-16 10:06:58,400 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 4065 transitions. Word has length 388 [2024-11-16 10:06:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:58,401 INFO L471 AbstractCegarLoop]: Abstraction has 2777 states and 4065 transitions. [2024-11-16 10:06:58,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 10:06:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 4065 transitions. [2024-11-16 10:06:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-16 10:06:58,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:58,408 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:58,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:58,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:58,610 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:58,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:58,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1646173368, now seen corresponding path program 1 times [2024-11-16 10:06:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:58,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982616547] [2024-11-16 10:06:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:58,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-11-16 10:06:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-11-16 10:06:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-11-16 10:06:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-11-16 10:06:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-11-16 10:06:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:06:58,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:58,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982616547] [2024-11-16 10:06:58,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982616547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:58,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088130174] [2024-11-16 10:06:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:58,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:58,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:58,878 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:58,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 10:06:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:59,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 10:06:59,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:07:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:07:00,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:07:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-16 10:07:00,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088130174] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:00,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:07:00,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 7] total 13 [2024-11-16 10:07:00,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612345756] [2024-11-16 10:07:00,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:07:00,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 10:07:00,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:07:00,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 10:07:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-16 10:07:00,566 INFO L87 Difference]: Start difference. First operand 2777 states and 4065 transitions. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:07:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:07:02,961 INFO L93 Difference]: Finished difference Result 3596 states and 5251 transitions. [2024-11-16 10:07:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:07:02,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 388 [2024-11-16 10:07:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:07:02,968 INFO L225 Difference]: With dead ends: 3596 [2024-11-16 10:07:02,968 INFO L226 Difference]: Without dead ends: 2770 [2024-11-16 10:07:02,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-16 10:07:02,970 INFO L432 NwaCegarLoop]: 1652 mSDtfsCounter, 2640 mSDsluCounter, 3380 mSDsCounter, 0 mSdLazyCounter, 3589 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5032 SdHoareTripleChecker+Invalid, 3590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:07:02,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2648 Valid, 5032 Invalid, 3590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3589 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 10:07:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2024-11-16 10:07:03,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2767. [2024-11-16 10:07:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2747 states have (on average 1.4608663997087732) internal successors, (4013), 2747 states have internal predecessors, (4013), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-16 10:07:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4049 transitions. [2024-11-16 10:07:03,011 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4049 transitions. Word has length 388 [2024-11-16 10:07:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:07:03,012 INFO L471 AbstractCegarLoop]: Abstraction has 2767 states and 4049 transitions. [2024-11-16 10:07:03,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:07:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4049 transitions. [2024-11-16 10:07:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-16 10:07:03,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:07:03,016 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:07:03,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 10:07:03,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 10:07:03,221 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:07:03,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:07:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash 248485750, now seen corresponding path program 1 times [2024-11-16 10:07:03,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:07:03,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446707189] [2024-11-16 10:07:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:03,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:07:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:03,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-11-16 10:07:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:03,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-11-16 10:07:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:03,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-11-16 10:07:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:03,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-11-16 10:07:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:03,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-11-16 10:07:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-16 10:07:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:07:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446707189] [2024-11-16 10:07:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446707189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730326055] [2024-11-16 10:07:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:03,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:03,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:07:03,470 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:07:03,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process