./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dcec1ccd806a412efdabd457261f7c023005f550a4699f0a865a5aa2d5f9f4d9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 23:54:00,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 23:54:00,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 23:54:00,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 23:54:00,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 23:54:00,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 23:54:00,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 23:54:00,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 23:54:00,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 23:54:00,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 23:54:00,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 23:54:00,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 23:54:00,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 23:54:00,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 23:54:00,187 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 23:54:00,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 23:54:00,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 23:54:00,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 23:54:00,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 23:54:00,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 23:54:00,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 23:54:00,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 23:54:00,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 23:54:00,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 23:54:00,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 23:54:00,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 23:54:00,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 23:54:00,192 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 23:54:00,192 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 23:54:00,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 23:54:00,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 23:54:00,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 23:54:00,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:54:00,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 23:54:00,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 23:54:00,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 23:54:00,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 23:54:00,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 23:54:00,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 23:54:00,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 23:54:00,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 23:54:00,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 23:54:00,196 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcec1ccd806a412efdabd457261f7c023005f550a4699f0a865a5aa2d5f9f4d9 [2024-11-09 23:54:00,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 23:54:00,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 23:54:00,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 23:54:00,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 23:54:00,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 23:54:00,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 23:54:01,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 23:54:02,125 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 23:54:02,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 23:54:02,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291890afd/46c116cd753640cd8b0480230639c098/FLAG95fe481bc [2024-11-09 23:54:02,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291890afd/46c116cd753640cd8b0480230639c098 [2024-11-09 23:54:02,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 23:54:02,152 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 23:54:02,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 23:54:02,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 23:54:02,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 23:54:02,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4fccbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02, skipping insertion in model container [2024-11-09 23:54:02,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,202 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 23:54:02,429 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2024-11-09 23:54:02,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:54:02,480 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 23:54:02,515 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2024-11-09 23:54:02,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:54:02,550 INFO L204 MainTranslator]: Completed translation [2024-11-09 23:54:02,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02 WrapperNode [2024-11-09 23:54:02,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 23:54:02,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 23:54:02,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 23:54:02,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 23:54:02,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,596 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 465 [2024-11-09 23:54:02,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 23:54:02,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 23:54:02,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 23:54:02,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 23:54:02,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,645 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 23:54:02,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,653 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 23:54:02,667 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 23:54:02,667 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 23:54:02,667 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 23:54:02,668 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (1/1) ... [2024-11-09 23:54:02,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:54:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:54:02,703 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) [2024-11-09 23:54:02,709 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 [2024-11-09 23:54:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 23:54:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 23:54:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 23:54:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 23:54:02,882 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 23:54:02,884 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 23:54:03,468 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L349: havoc main_~node4____CPAchecker_TMP_1~0#1; [2024-11-09 23:54:03,469 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L184: havoc main_~node2__m2~0#1;havoc main_~node1__m1~0#1; [2024-11-09 23:54:03,469 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L184: havoc main_~node2__m2~0#1;havoc main_~node1__m1~0#1; [2024-11-09 23:54:03,469 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L184: havoc main_~node2__m2~0#1;havoc main_~node1__m1~0#1; [2024-11-09 23:54:03,470 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L184: havoc main_~node2__m2~0#1;havoc main_~node1__m1~0#1; [2024-11-09 23:54:03,470 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L184: havoc main_~node2__m2~0#1;havoc main_~node1__m1~0#1; [2024-11-09 23:54:03,470 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L220: havoc main_~node4__m4~0#1;havoc main_~node3__m3~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L220: havoc main_~node4__m4~0#1;havoc main_~node3__m3~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L220: havoc main_~node4__m4~0#1;havoc main_~node3__m3~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L220: havoc main_~node4__m4~0#1;havoc main_~node3__m3~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L435: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L584: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L321: havoc main_~node4____CPAchecker_TMP_0~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L521: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-09 23:54:03,471 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L257: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:54:03,472 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L257: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:54:03,472 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L257: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:54:03,472 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L407: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-09 23:54:03,472 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L96: havoc main_~init__tmp~0#1; [2024-11-09 23:54:03,472 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L493: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-09 23:54:03,472 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L612: havoc main_~node1____CPAchecker_TMP_1~0#1; [2024-11-09 23:54:03,498 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-09 23:54:03,499 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 23:54:03,524 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 23:54:03,528 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 23:54:03,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:54:03 BoogieIcfgContainer [2024-11-09 23:54:03,528 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 23:54:03,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 23:54:03,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 23:54:03,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 23:54:03,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:54:02" (1/3) ... [2024-11-09 23:54:03,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2580759c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:54:03, skipping insertion in model container [2024-11-09 23:54:03,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:54:02" (2/3) ... [2024-11-09 23:54:03,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2580759c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:54:03, skipping insertion in model container [2024-11-09 23:54:03,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:54:03" (3/3) ... [2024-11-09 23:54:03,537 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 23:54:03,556 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 23:54:03,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 23:54:03,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 23:54:03,647 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;@10c24a02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 23:54:03,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 23:54:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.646551724137931) internal successors, (191), 117 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 23:54:03,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:03,664 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:03,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:03,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash -213052115, now seen corresponding path program 1 times [2024-11-09 23:54:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:03,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387036364] [2024-11-09 23:54:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:04,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:04,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387036364] [2024-11-09 23:54:04,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387036364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:04,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479354954] [2024-11-09 23:54:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:04,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:04,125 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.646551724137931) internal successors, (191), 117 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:04,189 INFO L93 Difference]: Finished difference Result 281 states and 440 transitions. [2024-11-09 23:54:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:04,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 23:54:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:04,200 INFO L225 Difference]: With dead ends: 281 [2024-11-09 23:54:04,200 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 23:54:04,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:04,206 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 134 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:04,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 397 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:04,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 23:54:04,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2024-11-09 23:54:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.4806629834254144) internal successors, (268), 181 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2024-11-09 23:54:04,252 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 49 [2024-11-09 23:54:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:04,253 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2024-11-09 23:54:04,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2024-11-09 23:54:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 23:54:04,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:04,255 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:04,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 23:54:04,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:04,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash 233231995, now seen corresponding path program 1 times [2024-11-09 23:54:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936334425] [2024-11-09 23:54:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936334425] [2024-11-09 23:54:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936334425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824771113] [2024-11-09 23:54:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:04,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:04,433 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:04,488 INFO L93 Difference]: Finished difference Result 458 states and 696 transitions. [2024-11-09 23:54:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:04,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-09 23:54:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:04,490 INFO L225 Difference]: With dead ends: 458 [2024-11-09 23:54:04,491 INFO L226 Difference]: Without dead ends: 303 [2024-11-09 23:54:04,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:04,493 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 112 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:04,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 342 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-09 23:54:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2024-11-09 23:54:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.5066666666666666) internal successors, (452), 300 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 452 transitions. [2024-11-09 23:54:04,516 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 452 transitions. Word has length 50 [2024-11-09 23:54:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:04,517 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 452 transitions. [2024-11-09 23:54:04,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 452 transitions. [2024-11-09 23:54:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 23:54:04,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:04,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:04,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 23:54:04,520 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:04,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2099133, now seen corresponding path program 1 times [2024-11-09 23:54:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:04,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336649444] [2024-11-09 23:54:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:04,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:04,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336649444] [2024-11-09 23:54:04,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336649444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:04,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:04,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:04,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19491805] [2024-11-09 23:54:04,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:04,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:04,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:04,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:04,685 INFO L87 Difference]: Start difference. First operand 301 states and 452 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:04,720 INFO L93 Difference]: Finished difference Result 781 states and 1194 transitions. [2024-11-09 23:54:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 23:54:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:04,725 INFO L225 Difference]: With dead ends: 781 [2024-11-09 23:54:04,726 INFO L226 Difference]: Without dead ends: 507 [2024-11-09 23:54:04,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:04,729 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 107 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:04,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 327 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-09 23:54:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2024-11-09 23:54:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.5158730158730158) internal successors, (764), 504 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 764 transitions. [2024-11-09 23:54:04,766 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 764 transitions. Word has length 51 [2024-11-09 23:54:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:04,767 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 764 transitions. [2024-11-09 23:54:04,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 764 transitions. [2024-11-09 23:54:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 23:54:04,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:04,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:04,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 23:54:04,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:04,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1039134411, now seen corresponding path program 1 times [2024-11-09 23:54:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:04,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359289528] [2024-11-09 23:54:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:04,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359289528] [2024-11-09 23:54:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359289528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:05,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 23:54:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969596804] [2024-11-09 23:54:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:05,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 23:54:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 23:54:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:05,043 INFO L87 Difference]: Start difference. First operand 505 states and 764 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:05,197 INFO L93 Difference]: Finished difference Result 2895 states and 4449 transitions. [2024-11-09 23:54:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 23:54:05,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-09 23:54:05,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:05,209 INFO L225 Difference]: With dead ends: 2895 [2024-11-09 23:54:05,210 INFO L226 Difference]: Without dead ends: 2417 [2024-11-09 23:54:05,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 23:54:05,214 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 963 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:05,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1436 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:54:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2024-11-09 23:54:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 981. [2024-11-09 23:54:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.5142857142857142) internal successors, (1484), 980 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1484 transitions. [2024-11-09 23:54:05,249 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1484 transitions. Word has length 52 [2024-11-09 23:54:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:05,249 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1484 transitions. [2024-11-09 23:54:05,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1484 transitions. [2024-11-09 23:54:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 23:54:05,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:05,254 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:05,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 23:54:05,255 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:05,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:05,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2145186475, now seen corresponding path program 1 times [2024-11-09 23:54:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:05,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556910658] [2024-11-09 23:54:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:05,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556910658] [2024-11-09 23:54:05,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556910658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:05,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:05,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 23:54:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196114128] [2024-11-09 23:54:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:05,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 23:54:05,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:05,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 23:54:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:05,474 INFO L87 Difference]: Start difference. First operand 981 states and 1484 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:05,579 INFO L93 Difference]: Finished difference Result 4261 states and 6464 transitions. [2024-11-09 23:54:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 23:54:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 23:54:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:05,593 INFO L225 Difference]: With dead ends: 4261 [2024-11-09 23:54:05,594 INFO L226 Difference]: Without dead ends: 3307 [2024-11-09 23:54:05,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:05,598 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 484 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:05,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 656 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:54:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2024-11-09 23:54:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3301. [2024-11-09 23:54:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3301 states, 3300 states have (on average 1.5115151515151515) internal successors, (4988), 3300 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 4988 transitions. [2024-11-09 23:54:05,696 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 4988 transitions. Word has length 54 [2024-11-09 23:54:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:05,697 INFO L471 AbstractCegarLoop]: Abstraction has 3301 states and 4988 transitions. [2024-11-09 23:54:05,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 4988 transitions. [2024-11-09 23:54:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 23:54:05,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:05,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:05,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 23:54:05,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:05,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash 260821982, now seen corresponding path program 1 times [2024-11-09 23:54:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:05,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385517798] [2024-11-09 23:54:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:05,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385517798] [2024-11-09 23:54:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385517798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:05,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:05,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102564991] [2024-11-09 23:54:05,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:05,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:05,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:05,805 INFO L87 Difference]: Start difference. First operand 3301 states and 4988 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:05,860 INFO L93 Difference]: Finished difference Result 8713 states and 13118 transitions. [2024-11-09 23:54:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:05,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-09 23:54:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:05,882 INFO L225 Difference]: With dead ends: 8713 [2024-11-09 23:54:05,882 INFO L226 Difference]: Without dead ends: 5439 [2024-11-09 23:54:05,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:05,890 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 119 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:05,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 383 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5439 states. [2024-11-09 23:54:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5439 to 5437. [2024-11-09 23:54:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 1.4885945548197204) internal successors, (8092), 5436 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8092 transitions. [2024-11-09 23:54:06,012 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8092 transitions. Word has length 55 [2024-11-09 23:54:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:06,012 INFO L471 AbstractCegarLoop]: Abstraction has 5437 states and 8092 transitions. [2024-11-09 23:54:06,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8092 transitions. [2024-11-09 23:54:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 23:54:06,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:06,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:06,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 23:54:06,014 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:06,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1935923955, now seen corresponding path program 1 times [2024-11-09 23:54:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535712157] [2024-11-09 23:54:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535712157] [2024-11-09 23:54:06,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535712157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:06,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:06,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:54:06,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593544308] [2024-11-09 23:54:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:06,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:54:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:06,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:54:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:54:06,438 INFO L87 Difference]: Start difference. First operand 5437 states and 8092 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:06,492 INFO L93 Difference]: Finished difference Result 5823 states and 8605 transitions. [2024-11-09 23:54:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:54:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-09 23:54:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:06,513 INFO L225 Difference]: With dead ends: 5823 [2024-11-09 23:54:06,514 INFO L226 Difference]: Without dead ends: 5821 [2024-11-09 23:54:06,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:54:06,519 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:06,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 626 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2024-11-09 23:54:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5821. [2024-11-09 23:54:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5821 states, 5820 states have (on average 1.4563573883161511) internal successors, (8476), 5820 states have internal predecessors, (8476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5821 states to 5821 states and 8476 transitions. [2024-11-09 23:54:06,633 INFO L78 Accepts]: Start accepts. Automaton has 5821 states and 8476 transitions. Word has length 56 [2024-11-09 23:54:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:06,634 INFO L471 AbstractCegarLoop]: Abstraction has 5821 states and 8476 transitions. [2024-11-09 23:54:06,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5821 states and 8476 transitions. [2024-11-09 23:54:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 23:54:06,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:06,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:54:06,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 23:54:06,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:06,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash 60524758, now seen corresponding path program 1 times [2024-11-09 23:54:06,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:06,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152444741] [2024-11-09 23:54:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:06,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152444741] [2024-11-09 23:54:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152444741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:06,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:06,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866112693] [2024-11-09 23:54:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:06,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:06,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:06,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:06,781 INFO L87 Difference]: Start difference. First operand 5821 states and 8476 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:06,865 INFO L93 Difference]: Finished difference Result 14195 states and 20724 transitions. [2024-11-09 23:54:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 23:54:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:06,906 INFO L225 Difference]: With dead ends: 14195 [2024-11-09 23:54:06,906 INFO L226 Difference]: Without dead ends: 8401 [2024-11-09 23:54:06,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:06,919 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 96 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:06,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 291 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2024-11-09 23:54:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 8343. [2024-11-09 23:54:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8343 states, 8342 states have (on average 1.4512107408295374) internal successors, (12106), 8342 states have internal predecessors, (12106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8343 states to 8343 states and 12106 transitions. [2024-11-09 23:54:07,105 INFO L78 Accepts]: Start accepts. Automaton has 8343 states and 12106 transitions. Word has length 57 [2024-11-09 23:54:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:07,105 INFO L471 AbstractCegarLoop]: Abstraction has 8343 states and 12106 transitions. [2024-11-09 23:54:07,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8343 states and 12106 transitions. [2024-11-09 23:54:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 23:54:07,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:07,111 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2024-11-09 23:54:07,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 23:54:07,111 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:07,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash -487811905, now seen corresponding path program 1 times [2024-11-09 23:54:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770495992] [2024-11-09 23:54:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:07,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:07,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770495992] [2024-11-09 23:54:07,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770495992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:54:07,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919517087] [2024-11-09 23:54:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:07,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:54:07,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:54:07,609 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) [2024-11-09 23:54:07,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 23:54:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:07,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 23:54:07,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:54:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:08,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:54:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919517087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:54:09,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:54:09,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-09 23:54:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756484305] [2024-11-09 23:54:09,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:54:09,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 23:54:09,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 23:54:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-09 23:54:09,225 INFO L87 Difference]: Start difference. First operand 8343 states and 12106 transitions. Second operand has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:16,238 INFO L93 Difference]: Finished difference Result 59599 states and 86529 transitions. [2024-11-09 23:54:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-09 23:54:16,239 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-09 23:54:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:16,340 INFO L225 Difference]: With dead ends: 59599 [2024-11-09 23:54:16,340 INFO L226 Difference]: Without dead ends: 51285 [2024-11-09 23:54:16,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8041 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3565, Invalid=17027, Unknown=0, NotChecked=0, Total=20592 [2024-11-09 23:54:16,363 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 13304 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13304 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:16,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13304 Valid, 2292 Invalid, 2523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 23:54:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51285 states. [2024-11-09 23:54:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51285 to 46410. [2024-11-09 23:54:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46410 states, 46409 states have (on average 1.4324592212717362) internal successors, (66479), 46409 states have internal predecessors, (66479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46410 states to 46410 states and 66479 transitions. [2024-11-09 23:54:17,472 INFO L78 Accepts]: Start accepts. Automaton has 46410 states and 66479 transitions. Word has length 81 [2024-11-09 23:54:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:17,473 INFO L471 AbstractCegarLoop]: Abstraction has 46410 states and 66479 transitions. [2024-11-09 23:54:17,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 46410 states and 66479 transitions. [2024-11-09 23:54:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 23:54:17,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:17,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:17,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 23:54:17,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:54:17,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:17,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:17,685 INFO L85 PathProgramCache]: Analyzing trace with hash 238082498, now seen corresponding path program 1 times [2024-11-09 23:54:17,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800671006] [2024-11-09 23:54:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:17,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:17,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:17,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800671006] [2024-11-09 23:54:17,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800671006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:17,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:17,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:17,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834974321] [2024-11-09 23:54:17,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:17,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:17,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:17,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:17,769 INFO L87 Difference]: Start difference. First operand 46410 states and 66479 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:18,143 INFO L93 Difference]: Finished difference Result 114108 states and 163005 transitions. [2024-11-09 23:54:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:18,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 23:54:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:18,274 INFO L225 Difference]: With dead ends: 114108 [2024-11-09 23:54:18,274 INFO L226 Difference]: Without dead ends: 77580 [2024-11-09 23:54:18,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:18,319 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 91 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:18,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 310 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77580 states. [2024-11-09 23:54:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77580 to 77578. [2024-11-09 23:54:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77578 states, 77577 states have (on average 1.414852340255488) internal successors, (109760), 77577 states have internal predecessors, (109760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77578 states to 77578 states and 109760 transitions. [2024-11-09 23:54:19,750 INFO L78 Accepts]: Start accepts. Automaton has 77578 states and 109760 transitions. Word has length 82 [2024-11-09 23:54:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:19,751 INFO L471 AbstractCegarLoop]: Abstraction has 77578 states and 109760 transitions. [2024-11-09 23:54:19,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 77578 states and 109760 transitions. [2024-11-09 23:54:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 23:54:19,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:19,756 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:19,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 23:54:19,756 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:19,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 56379239, now seen corresponding path program 1 times [2024-11-09 23:54:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58325463] [2024-11-09 23:54:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:20,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:20,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58325463] [2024-11-09 23:54:20,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58325463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:20,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:20,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:20,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101985417] [2024-11-09 23:54:20,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:20,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:20,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:20,005 INFO L87 Difference]: Start difference. First operand 77578 states and 109760 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:20,600 INFO L93 Difference]: Finished difference Result 192152 states and 270786 transitions. [2024-11-09 23:54:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 23:54:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:20,941 INFO L225 Difference]: With dead ends: 192152 [2024-11-09 23:54:20,941 INFO L226 Difference]: Without dead ends: 124643 [2024-11-09 23:54:21,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:21,020 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 92 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:21,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 329 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124643 states. [2024-11-09 23:54:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124643 to 121133. [2024-11-09 23:54:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121133 states, 121132 states have (on average 1.3975002476637057) internal successors, (169282), 121132 states have internal predecessors, (169282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121133 states to 121133 states and 169282 transitions. [2024-11-09 23:54:22,866 INFO L78 Accepts]: Start accepts. Automaton has 121133 states and 169282 transitions. Word has length 82 [2024-11-09 23:54:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:22,867 INFO L471 AbstractCegarLoop]: Abstraction has 121133 states and 169282 transitions. [2024-11-09 23:54:22,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 121133 states and 169282 transitions. [2024-11-09 23:54:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 23:54:22,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:22,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:22,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 23:54:22,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:22,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2029286554, now seen corresponding path program 1 times [2024-11-09 23:54:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395597726] [2024-11-09 23:54:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 23:54:23,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395597726] [2024-11-09 23:54:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395597726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:23,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:23,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 23:54:23,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160505157] [2024-11-09 23:54:23,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:23,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 23:54:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:23,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 23:54:23,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:23,489 INFO L87 Difference]: Start difference. First operand 121133 states and 169282 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:24,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:24,583 INFO L93 Difference]: Finished difference Result 288543 states and 405284 transitions. [2024-11-09 23:54:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 23:54:24,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 23:54:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:24,934 INFO L225 Difference]: With dead ends: 288543 [2024-11-09 23:54:24,934 INFO L226 Difference]: Without dead ends: 243757 [2024-11-09 23:54:25,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 23:54:25,014 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 806 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:25,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1007 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:54:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243757 states. [2024-11-09 23:54:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243757 to 164658. [2024-11-09 23:54:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164658 states, 164657 states have (on average 1.392567579878171) internal successors, (229296), 164657 states have internal predecessors, (229296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164658 states to 164658 states and 229296 transitions. [2024-11-09 23:54:28,082 INFO L78 Accepts]: Start accepts. Automaton has 164658 states and 229296 transitions. Word has length 82 [2024-11-09 23:54:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:28,082 INFO L471 AbstractCegarLoop]: Abstraction has 164658 states and 229296 transitions. [2024-11-09 23:54:28,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 164658 states and 229296 transitions. [2024-11-09 23:54:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 23:54:28,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:28,089 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:28,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 23:54:28,089 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:28,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 16798823, now seen corresponding path program 1 times [2024-11-09 23:54:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563854016] [2024-11-09 23:54:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:28,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563854016] [2024-11-09 23:54:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563854016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435469393] [2024-11-09 23:54:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:28,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:28,157 INFO L87 Difference]: Start difference. First operand 164658 states and 229296 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:29,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:29,293 INFO L93 Difference]: Finished difference Result 268795 states and 373316 transitions. [2024-11-09 23:54:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:29,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 23:54:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:29,576 INFO L225 Difference]: With dead ends: 268795 [2024-11-09 23:54:29,576 INFO L226 Difference]: Without dead ends: 167975 [2024-11-09 23:54:29,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:29,659 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:29,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167975 states. [2024-11-09 23:54:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167975 to 153858. [2024-11-09 23:54:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153858 states, 153857 states have (on average 1.3732361868488272) internal successors, (211282), 153857 states have internal predecessors, (211282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153858 states to 153858 states and 211282 transitions. [2024-11-09 23:54:32,231 INFO L78 Accepts]: Start accepts. Automaton has 153858 states and 211282 transitions. Word has length 82 [2024-11-09 23:54:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:32,231 INFO L471 AbstractCegarLoop]: Abstraction has 153858 states and 211282 transitions. [2024-11-09 23:54:32,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 153858 states and 211282 transitions. [2024-11-09 23:54:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 23:54:32,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:32,237 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:32,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 23:54:32,238 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:32,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash -588232509, now seen corresponding path program 1 times [2024-11-09 23:54:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:32,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280181589] [2024-11-09 23:54:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:32,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 23:54:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:32,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280181589] [2024-11-09 23:54:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280181589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:32,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:32,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 23:54:32,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056689742] [2024-11-09 23:54:32,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:32,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 23:54:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:32,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 23:54:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:32,360 INFO L87 Difference]: Start difference. First operand 153858 states and 211282 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:33,736 INFO L93 Difference]: Finished difference Result 320728 states and 444429 transitions. [2024-11-09 23:54:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 23:54:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 23:54:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:34,117 INFO L225 Difference]: With dead ends: 320728 [2024-11-09 23:54:34,117 INFO L226 Difference]: Without dead ends: 269826 [2024-11-09 23:54:34,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 23:54:34,144 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 819 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:34,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1109 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269826 states. [2024-11-09 23:54:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269826 to 203190. [2024-11-09 23:54:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203190 states, 203189 states have (on average 1.3707877887090345) internal successors, (278529), 203189 states have internal predecessors, (278529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203190 states to 203190 states and 278529 transitions. [2024-11-09 23:54:37,095 INFO L78 Accepts]: Start accepts. Automaton has 203190 states and 278529 transitions. Word has length 82 [2024-11-09 23:54:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:37,095 INFO L471 AbstractCegarLoop]: Abstraction has 203190 states and 278529 transitions. [2024-11-09 23:54:37,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 203190 states and 278529 transitions. [2024-11-09 23:54:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 23:54:37,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:37,100 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:37,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 23:54:37,100 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:37,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 636258790, now seen corresponding path program 1 times [2024-11-09 23:54:37,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:37,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225454730] [2024-11-09 23:54:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:37,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 23:54:37,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225454730] [2024-11-09 23:54:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225454730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:37,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 23:54:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948215416] [2024-11-09 23:54:37,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:37,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 23:54:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 23:54:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:37,227 INFO L87 Difference]: Start difference. First operand 203190 states and 278529 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:38,757 INFO L93 Difference]: Finished difference Result 375215 states and 518872 transitions. [2024-11-09 23:54:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 23:54:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-09 23:54:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:39,186 INFO L225 Difference]: With dead ends: 375215 [2024-11-09 23:54:39,186 INFO L226 Difference]: Without dead ends: 319101 [2024-11-09 23:54:39,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 23:54:39,295 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 818 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:39,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 995 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:39,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319101 states. [2024-11-09 23:54:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319101 to 242548. [2024-11-09 23:54:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242548 states, 242547 states have (on average 1.3697304027672987) internal successors, (332224), 242547 states have internal predecessors, (332224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242548 states to 242548 states and 332224 transitions. [2024-11-09 23:54:43,660 INFO L78 Accepts]: Start accepts. Automaton has 242548 states and 332224 transitions. Word has length 82 [2024-11-09 23:54:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:43,660 INFO L471 AbstractCegarLoop]: Abstraction has 242548 states and 332224 transitions. [2024-11-09 23:54:43,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 242548 states and 332224 transitions. [2024-11-09 23:54:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 23:54:43,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:43,665 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:43,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 23:54:43,665 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:43,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash 730817972, now seen corresponding path program 1 times [2024-11-09 23:54:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050132733] [2024-11-09 23:54:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 23:54:43,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:43,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050132733] [2024-11-09 23:54:43,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050132733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:43,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:43,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 23:54:43,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206292143] [2024-11-09 23:54:43,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:43,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 23:54:43,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 23:54:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 23:54:43,782 INFO L87 Difference]: Start difference. First operand 242548 states and 332224 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:45,520 INFO L93 Difference]: Finished difference Result 367071 states and 506157 transitions. [2024-11-09 23:54:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 23:54:45,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-09 23:54:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:45,991 INFO L225 Difference]: With dead ends: 367071 [2024-11-09 23:54:45,991 INFO L226 Difference]: Without dead ends: 342701 [2024-11-09 23:54:46,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 23:54:46,075 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 839 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:46,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 971 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342701 states. [2024-11-09 23:54:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342701 to 266208. [2024-11-09 23:54:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266208 states, 266207 states have (on average 1.3702644934205337) internal successors, (364774), 266207 states have internal predecessors, (364774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266208 states to 266208 states and 364774 transitions. [2024-11-09 23:54:50,815 INFO L78 Accepts]: Start accepts. Automaton has 266208 states and 364774 transitions. Word has length 83 [2024-11-09 23:54:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:54:50,815 INFO L471 AbstractCegarLoop]: Abstraction has 266208 states and 364774 transitions. [2024-11-09 23:54:50,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 266208 states and 364774 transitions. [2024-11-09 23:54:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 23:54:50,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:54:50,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-09 23:54:50,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 23:54:50,821 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:54:50,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:54:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1343633669, now seen corresponding path program 1 times [2024-11-09 23:54:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:54:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767877533] [2024-11-09 23:54:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:54:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:54:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:54:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:54:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:54:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767877533] [2024-11-09 23:54:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767877533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:54:50,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:54:50,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:54:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004920922] [2024-11-09 23:54:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:54:50,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:54:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:54:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:54:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:50,886 INFO L87 Difference]: Start difference. First operand 266208 states and 364774 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:54:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:54:53,289 INFO L93 Difference]: Finished difference Result 622826 states and 849552 transitions. [2024-11-09 23:54:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:54:53,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-09 23:54:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:54:53,868 INFO L225 Difference]: With dead ends: 622826 [2024-11-09 23:54:53,868 INFO L226 Difference]: Without dead ends: 391262 [2024-11-09 23:54:54,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:54:54,020 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 91 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:54:54,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 376 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:54:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391262 states.