./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.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.3.ufo.BOUNDED-6.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 87f1dffc4791cf25ae510fd8866e3e496425d62832b1b02adb55ef79c14eda4f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 23:51:28,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 23:51:29,042 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 23:51:29,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 23:51:29,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 23:51:29,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 23:51:29,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 23:51:29,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 23:51:29,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 23:51:29,098 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 23:51:29,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 23:51:29,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 23:51:29,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 23:51:29,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 23:51:29,101 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 23:51:29,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 23:51:29,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 23:51:29,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 23:51:29,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 23:51:29,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 23:51:29,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 23:51:29,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 23:51:29,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 23:51:29,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 23:51:29,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 23:51:29,110 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 23:51:29,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 23:51:29,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 23:51:29,110 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 23:51:29,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 23:51:29,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 23:51:29,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 23:51:29,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:51:29,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 23:51:29,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 23:51:29,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 23:51:29,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 23:51:29,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 23:51:29,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 23:51:29,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 23:51:29,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 23:51:29,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 23:51:29,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87f1dffc4791cf25ae510fd8866e3e496425d62832b1b02adb55ef79c14eda4f [2024-11-09 23:51:29,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 23:51:29,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 23:51:29,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 23:51:29,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 23:51:29,424 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 23:51:29,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-09 23:51:30,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 23:51:31,142 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 23:51:31,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-09 23:51:31,155 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4ea3087/7e62c238ed0047f3a1c0cc08a810a51b/FLAGa29aa5780 [2024-11-09 23:51:31,495 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4ea3087/7e62c238ed0047f3a1c0cc08a810a51b [2024-11-09 23:51:31,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 23:51:31,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 23:51:31,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 23:51:31,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 23:51:31,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 23:51:31,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:31,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27147619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31, skipping insertion in model container [2024-11-09 23:51:31,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:31,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 23:51:31,760 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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2024-11-09 23:51:31,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:51:31,813 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 23:51:31,857 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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2024-11-09 23:51:31,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:51:31,917 INFO L204 MainTranslator]: Completed translation [2024-11-09 23:51:31,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31 WrapperNode [2024-11-09 23:51:31,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 23:51:31,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 23:51:31,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 23:51:31,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 23:51:31,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:31,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:31,990 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 366 [2024-11-09 23:51:31,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 23:51:31,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 23:51:31,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 23:51:31,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 23:51:32,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,051 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 23:51:32,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 23:51:32,076 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 23:51:32,076 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 23:51:32,076 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 23:51:32,077 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (1/1) ... [2024-11-09 23:51:32,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:51:32,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:32,118 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 23:51:32,121 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 23:51:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 23:51:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 23:51:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 23:51:32,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 23:51:32,301 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 23:51:32,306 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 23:51:32,830 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L170: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:51:32,831 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L170: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:51:32,831 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L170: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:51:32,831 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L170: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:51:32,832 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L385: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-09 23:51:32,832 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L443: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-09 23:51:32,832 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L271: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-09 23:51:32,832 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L471: havoc main_~node1____CPAchecker_TMP_1~0#1; [2024-11-09 23:51:32,832 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,832 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,834 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,834 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,834 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,838 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,838 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,838 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,839 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,839 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,839 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,839 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,840 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,840 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L133: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:51:32,840 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L216: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:51:32,840 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L216: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:51:32,841 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L216: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:51:32,841 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L299: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-09 23:51:32,841 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-09 23:51:32,871 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-09 23:51:32,872 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 23:51:32,892 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 23:51:32,892 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 23:51:32,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:51:32 BoogieIcfgContainer [2024-11-09 23:51:32,894 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 23:51:32,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 23:51:32,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 23:51:32,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 23:51:32,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:51:31" (1/3) ... [2024-11-09 23:51:32,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769f451c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:51:32, skipping insertion in model container [2024-11-09 23:51:32,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:51:31" (2/3) ... [2024-11-09 23:51:32,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769f451c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:51:32, skipping insertion in model container [2024-11-09 23:51:32,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:51:32" (3/3) ... [2024-11-09 23:51:32,904 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-09 23:51:32,926 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 23:51:32,926 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 23:51:32,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 23:51:32,992 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;@7f6b6c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 23:51:32,993 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 23:51:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 89 states have (on average 1.6404494382022472) internal successors, (146), 90 states have internal predecessors, (146), 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 23:51:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 23:51:33,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:33,007 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] [2024-11-09 23:51:33,008 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:33,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1978718942, now seen corresponding path program 1 times [2024-11-09 23:51:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430838033] [2024-11-09 23:51:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:33,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:33,527 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 23:51:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430838033] [2024-11-09 23:51:33,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430838033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:33,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:33,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421274539] [2024-11-09 23:51:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:33,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:33,569 INFO L87 Difference]: Start difference. First operand has 91 states, 89 states have (on average 1.6404494382022472) internal successors, (146), 90 states have internal predecessors, (146), 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 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:51:33,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:33,643 INFO L93 Difference]: Finished difference Result 214 states and 333 transitions. [2024-11-09 23:51:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-11-09 23:51:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:33,659 INFO L225 Difference]: With dead ends: 214 [2024-11-09 23:51:33,659 INFO L226 Difference]: Without dead ends: 137 [2024-11-09 23:51:33,662 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 23:51:33,665 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 104 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 313 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 23:51:33,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 313 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-09 23:51:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2024-11-09 23:51:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 134 states have internal predecessors, (197), 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 23:51:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2024-11-09 23:51:33,714 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 38 [2024-11-09 23:51:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:33,715 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2024-11-09 23:51:33,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:51:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2024-11-09 23:51:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 23:51:33,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:33,717 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] [2024-11-09 23:51:33,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 23:51:33,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:33,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1332135267, now seen corresponding path program 1 times [2024-11-09 23:51:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168408325] [2024-11-09 23:51:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:33,829 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 23:51:33,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:33,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168408325] [2024-11-09 23:51:33,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168408325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:33,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:33,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829480343] [2024-11-09 23:51:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:33,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:33,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:33,833 INFO L87 Difference]: Start difference. First operand 135 states and 197 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:51:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:33,867 INFO L93 Difference]: Finished difference Result 331 states and 497 transitions. [2024-11-09 23:51:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-09 23:51:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:33,869 INFO L225 Difference]: With dead ends: 331 [2024-11-09 23:51:33,870 INFO L226 Difference]: Without dead ends: 216 [2024-11-09 23:51:33,870 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 23:51:33,872 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 84 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 267 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 23:51:33,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-09 23:51:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2024-11-09 23:51:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.488262910798122) internal successors, (317), 213 states have internal predecessors, (317), 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 23:51:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 317 transitions. [2024-11-09 23:51:33,898 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 317 transitions. Word has length 39 [2024-11-09 23:51:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:33,899 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 317 transitions. [2024-11-09 23:51:33,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:51:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 317 transitions. [2024-11-09 23:51:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 23:51:33,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:33,901 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] [2024-11-09 23:51:33,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 23:51:33,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:33,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -295836008, now seen corresponding path program 1 times [2024-11-09 23:51:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:33,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218125614] [2024-11-09 23:51:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:33,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:33,994 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 23:51:33,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:33,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218125614] [2024-11-09 23:51:33,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218125614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:33,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:33,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:33,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265239546] [2024-11-09 23:51:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:34,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:34,002 INFO L87 Difference]: Start difference. First operand 214 states and 317 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 23:51:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:34,037 INFO L93 Difference]: Finished difference Result 534 states and 803 transitions. [2024-11-09 23:51:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:34,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-11-09 23:51:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:34,041 INFO L225 Difference]: With dead ends: 534 [2024-11-09 23:51:34,042 INFO L226 Difference]: Without dead ends: 340 [2024-11-09 23:51:34,043 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 23:51:34,044 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 79 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 252 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 23:51:34,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 252 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-09 23:51:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2024-11-09 23:51:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.486646884272997) internal successors, (501), 337 states have internal predecessors, (501), 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 23:51:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 501 transitions. [2024-11-09 23:51:34,068 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 501 transitions. Word has length 40 [2024-11-09 23:51:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:34,069 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 501 transitions. [2024-11-09 23:51:34,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 23:51:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 501 transitions. [2024-11-09 23:51:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 23:51:34,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:34,070 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] [2024-11-09 23:51:34,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 23:51:34,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:34,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1555042883, now seen corresponding path program 1 times [2024-11-09 23:51:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646480625] [2024-11-09 23:51:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:34,227 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 23:51:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646480625] [2024-11-09 23:51:34,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646480625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:34,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:34,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:51:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731190446] [2024-11-09 23:51:34,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:34,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:51:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:51:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:34,230 INFO L87 Difference]: Start difference. First operand 338 states and 501 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 23:51:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:34,343 INFO L93 Difference]: Finished difference Result 1610 states and 2425 transitions. [2024-11-09 23:51:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:51:34,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2024-11-09 23:51:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:34,350 INFO L225 Difference]: With dead ends: 1610 [2024-11-09 23:51:34,352 INFO L226 Difference]: Without dead ends: 1292 [2024-11-09 23:51:34,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 23:51:34,358 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 511 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:34,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 691 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:51:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-11-09 23:51:34,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 654. [2024-11-09 23:51:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.4777947932618682) internal successors, (965), 653 states have internal predecessors, (965), 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 23:51:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 965 transitions. [2024-11-09 23:51:34,403 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 965 transitions. Word has length 41 [2024-11-09 23:51:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:34,405 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 965 transitions. [2024-11-09 23:51:34,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 23:51:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 965 transitions. [2024-11-09 23:51:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 23:51:34,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:34,406 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] [2024-11-09 23:51:34,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 23:51:34,409 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:34,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 282980221, now seen corresponding path program 1 times [2024-11-09 23:51:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:34,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205154619] [2024-11-09 23:51:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:34,579 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 23:51:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205154619] [2024-11-09 23:51:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205154619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:34,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:34,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:51:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867957712] [2024-11-09 23:51:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:34,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:51:34,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:51:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:34,582 INFO L87 Difference]: Start difference. First operand 654 states and 965 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 23:51:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:34,654 INFO L93 Difference]: Finished difference Result 2268 states and 3344 transitions. [2024-11-09 23:51:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:51:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2024-11-09 23:51:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:34,661 INFO L225 Difference]: With dead ends: 2268 [2024-11-09 23:51:34,661 INFO L226 Difference]: Without dead ends: 1634 [2024-11-09 23:51:34,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:34,664 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 295 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:34,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 333 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:51:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2024-11-09 23:51:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1630. [2024-11-09 23:51:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 1.4616329036218538) internal successors, (2381), 1629 states have internal predecessors, (2381), 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 23:51:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2381 transitions. [2024-11-09 23:51:34,700 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2381 transitions. Word has length 43 [2024-11-09 23:51:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:34,701 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2381 transitions. [2024-11-09 23:51:34,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 23:51:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2381 transitions. [2024-11-09 23:51:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 23:51:34,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:34,704 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] [2024-11-09 23:51:34,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 23:51:34,704 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:34,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:34,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1058088261, now seen corresponding path program 1 times [2024-11-09 23:51:34,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:34,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048425310] [2024-11-09 23:51:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:35,028 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 23:51:35,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:35,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048425310] [2024-11-09 23:51:35,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048425310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:35,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:35,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:51:35,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323368105] [2024-11-09 23:51:35,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:35,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:51:35,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:35,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:51:35,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:35,033 INFO L87 Difference]: Start difference. First operand 1630 states and 2381 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 23:51:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:35,072 INFO L93 Difference]: Finished difference Result 1776 states and 2574 transitions. [2024-11-09 23:51:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:51:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2024-11-09 23:51:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:35,083 INFO L225 Difference]: With dead ends: 1776 [2024-11-09 23:51:35,083 INFO L226 Difference]: Without dead ends: 1774 [2024-11-09 23:51:35,084 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 23:51:35,089 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:35,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 469 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2024-11-09 23:51:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1774. [2024-11-09 23:51:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 1.4241398759165256) internal successors, (2525), 1773 states have internal predecessors, (2525), 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 23:51:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2525 transitions. [2024-11-09 23:51:35,140 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2525 transitions. Word has length 45 [2024-11-09 23:51:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:35,141 INFO L471 AbstractCegarLoop]: Abstraction has 1774 states and 2525 transitions. [2024-11-09 23:51:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 23:51:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2525 transitions. [2024-11-09 23:51:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 23:51:35,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:35,144 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] [2024-11-09 23:51:35,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 23:51:35,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:35,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1735426635, now seen corresponding path program 1 times [2024-11-09 23:51:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:35,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873555142] [2024-11-09 23:51:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:35,240 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 23:51:35,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:35,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873555142] [2024-11-09 23:51:35,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873555142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:35,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:35,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830473473] [2024-11-09 23:51:35,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:35,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:35,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:35,242 INFO L87 Difference]: Start difference. First operand 1774 states and 2525 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 23:51:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:35,282 INFO L93 Difference]: Finished difference Result 4253 states and 6074 transitions. [2024-11-09 23:51:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:35,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2024-11-09 23:51:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:35,292 INFO L225 Difference]: With dead ends: 4253 [2024-11-09 23:51:35,292 INFO L226 Difference]: Without dead ends: 2499 [2024-11-09 23:51:35,295 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 23:51:35,298 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 69 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:35,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2024-11-09 23:51:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2497. [2024-11-09 23:51:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2496 states have (on average 1.421474358974359) internal successors, (3548), 2496 states have internal predecessors, (3548), 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 23:51:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3548 transitions. [2024-11-09 23:51:35,352 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3548 transitions. Word has length 46 [2024-11-09 23:51:35,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:35,352 INFO L471 AbstractCegarLoop]: Abstraction has 2497 states and 3548 transitions. [2024-11-09 23:51:35,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 23:51:35,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3548 transitions. [2024-11-09 23:51:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 23:51:35,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:35,355 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] [2024-11-09 23:51:35,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 23:51:35,357 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:35,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1797836178, now seen corresponding path program 1 times [2024-11-09 23:51:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113612131] [2024-11-09 23:51:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 23:51:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113612131] [2024-11-09 23:51:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113612131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:51:35,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889907414] [2024-11-09 23:51:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:35,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:35,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:35,607 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 23:51:35,609 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 23:51:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:35,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 23:51:35,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:51:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:36,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:51:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:37,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889907414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:51:37,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:51:37,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 15 [2024-11-09 23:51:37,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6301067] [2024-11-09 23:51:37,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:51:37,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 23:51:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 23:51:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-09 23:51:37,003 INFO L87 Difference]: Start difference. First operand 2497 states and 3548 transitions. Second operand has 15 states, 15 states have (on average 12.0) internal successors, (180), 15 states have internal predecessors, (180), 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 23:51:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:37,783 INFO L93 Difference]: Finished difference Result 8775 states and 12488 transitions. [2024-11-09 23:51:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 23:51:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.0) internal successors, (180), 15 states have internal predecessors, (180), 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 65 [2024-11-09 23:51:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:37,805 INFO L225 Difference]: With dead ends: 8775 [2024-11-09 23:51:37,805 INFO L226 Difference]: Without dead ends: 6301 [2024-11-09 23:51:37,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=602, Unknown=0, NotChecked=0, Total=870 [2024-11-09 23:51:37,810 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 1592 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:37,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1499 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:51:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2024-11-09 23:51:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 5981. [2024-11-09 23:51:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5981 states, 5980 states have (on average 1.4076923076923078) internal successors, (8418), 5980 states have internal predecessors, (8418), 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 23:51:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5981 states to 5981 states and 8418 transitions. [2024-11-09 23:51:37,921 INFO L78 Accepts]: Start accepts. Automaton has 5981 states and 8418 transitions. Word has length 65 [2024-11-09 23:51:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:37,922 INFO L471 AbstractCegarLoop]: Abstraction has 5981 states and 8418 transitions. [2024-11-09 23:51:37,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.0) internal successors, (180), 15 states have internal predecessors, (180), 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 23:51:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5981 states and 8418 transitions. [2024-11-09 23:51:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:51:37,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:37,924 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] [2024-11-09 23:51:37,943 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 23:51:38,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:38,125 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:38,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:38,126 INFO L85 PathProgramCache]: Analyzing trace with hash 584840077, now seen corresponding path program 1 times [2024-11-09 23:51:38,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:38,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437547054] [2024-11-09 23:51:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437547054] [2024-11-09 23:51:38,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437547054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:38,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545966678] [2024-11-09 23:51:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:38,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:38,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:38,186 INFO L87 Difference]: Start difference. First operand 5981 states and 8418 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 23:51:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:38,232 INFO L93 Difference]: Finished difference Result 13702 states and 19215 transitions. [2024-11-09 23:51:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:38,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-09 23:51:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:38,262 INFO L225 Difference]: With dead ends: 13702 [2024-11-09 23:51:38,262 INFO L226 Difference]: Without dead ends: 9442 [2024-11-09 23:51:38,270 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 23:51:38,271 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 65 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 233 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 23:51:38,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 233 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9442 states. [2024-11-09 23:51:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9442 to 9440. [2024-11-09 23:51:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9440 states, 9439 states have (on average 1.3860578451107108) internal successors, (13083), 9439 states have internal predecessors, (13083), 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 23:51:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9440 states to 9440 states and 13083 transitions. [2024-11-09 23:51:38,488 INFO L78 Accepts]: Start accepts. Automaton has 9440 states and 13083 transitions. Word has length 66 [2024-11-09 23:51:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:38,489 INFO L471 AbstractCegarLoop]: Abstraction has 9440 states and 13083 transitions. [2024-11-09 23:51:38,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 23:51:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9440 states and 13083 transitions. [2024-11-09 23:51:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:51:38,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:38,491 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] [2024-11-09 23:51:38,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 23:51:38,492 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:38,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1500825716, now seen corresponding path program 1 times [2024-11-09 23:51:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635195646] [2024-11-09 23:51:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:38,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:38,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635195646] [2024-11-09 23:51:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635195646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:38,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:38,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:38,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670941286] [2024-11-09 23:51:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:38,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:38,564 INFO L87 Difference]: Start difference. First operand 9440 states and 13083 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 23:51:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:38,625 INFO L93 Difference]: Finished difference Result 21671 states and 29863 transitions. [2024-11-09 23:51:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-09 23:51:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:38,659 INFO L225 Difference]: With dead ends: 21671 [2024-11-09 23:51:38,659 INFO L226 Difference]: Without dead ends: 14052 [2024-11-09 23:51:38,670 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 23:51:38,671 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 66 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 262 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 23:51:38,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 262 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14052 states. [2024-11-09 23:51:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14052 to 13658. [2024-11-09 23:51:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13658 states, 13657 states have (on average 1.3636230504503186) internal successors, (18623), 13657 states have internal predecessors, (18623), 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 23:51:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13658 states to 13658 states and 18623 transitions. [2024-11-09 23:51:38,938 INFO L78 Accepts]: Start accepts. Automaton has 13658 states and 18623 transitions. Word has length 66 [2024-11-09 23:51:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:38,939 INFO L471 AbstractCegarLoop]: Abstraction has 13658 states and 18623 transitions. [2024-11-09 23:51:38,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 23:51:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13658 states and 18623 transitions. [2024-11-09 23:51:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:51:38,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:38,941 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] [2024-11-09 23:51:38,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 23:51:38,942 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:38,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash 545259661, now seen corresponding path program 1 times [2024-11-09 23:51:38,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:38,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531771532] [2024-11-09 23:51:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:38,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 23:51:39,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:39,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531771532] [2024-11-09 23:51:39,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531771532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:39,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:39,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:51:39,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707967834] [2024-11-09 23:51:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:39,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:51:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:51:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:39,040 INFO L87 Difference]: Start difference. First operand 13658 states and 18623 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 23:51:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:39,153 INFO L93 Difference]: Finished difference Result 27037 states and 37045 transitions. [2024-11-09 23:51:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:51:39,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 66 [2024-11-09 23:51:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:39,191 INFO L225 Difference]: With dead ends: 27037 [2024-11-09 23:51:39,192 INFO L226 Difference]: Without dead ends: 23059 [2024-11-09 23:51:39,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 23:51:39,204 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 360 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:39,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 564 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23059 states. [2024-11-09 23:51:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23059 to 17499. [2024-11-09 23:51:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17499 states, 17498 states have (on average 1.3568407818036348) internal successors, (23742), 17498 states have internal predecessors, (23742), 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 23:51:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17499 states to 17499 states and 23742 transitions. [2024-11-09 23:51:39,665 INFO L78 Accepts]: Start accepts. Automaton has 17499 states and 23742 transitions. Word has length 66 [2024-11-09 23:51:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:39,665 INFO L471 AbstractCegarLoop]: Abstraction has 17499 states and 23742 transitions. [2024-11-09 23:51:39,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 23:51:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17499 states and 23742 transitions. [2024-11-09 23:51:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:51:39,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:39,668 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] [2024-11-09 23:51:39,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 23:51:39,668 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:39,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2130053992, now seen corresponding path program 1 times [2024-11-09 23:51:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:39,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343074357] [2024-11-09 23:51:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:39,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 23:51:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343074357] [2024-11-09 23:51:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343074357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:39,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:51:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721217291] [2024-11-09 23:51:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:39,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:51:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:39,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:51:39,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:39,781 INFO L87 Difference]: Start difference. First operand 17499 states and 23742 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 23:51:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:39,906 INFO L93 Difference]: Finished difference Result 32327 states and 44215 transitions. [2024-11-09 23:51:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:51:39,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 66 [2024-11-09 23:51:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:40,026 INFO L225 Difference]: With dead ends: 32327 [2024-11-09 23:51:40,027 INFO L226 Difference]: Without dead ends: 26805 [2024-11-09 23:51:40,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 23:51:40,039 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 356 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:40,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 632 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26805 states. [2024-11-09 23:51:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26805 to 22850. [2024-11-09 23:51:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22850 states, 22849 states have (on average 1.3542824631274892) internal successors, (30944), 22849 states have internal predecessors, (30944), 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 23:51:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22850 states to 22850 states and 30944 transitions. [2024-11-09 23:51:40,446 INFO L78 Accepts]: Start accepts. Automaton has 22850 states and 30944 transitions. Word has length 66 [2024-11-09 23:51:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:40,446 INFO L471 AbstractCegarLoop]: Abstraction has 22850 states and 30944 transitions. [2024-11-09 23:51:40,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 23:51:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 22850 states and 30944 transitions. [2024-11-09 23:51:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:51:40,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:40,449 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] [2024-11-09 23:51:40,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 23:51:40,450 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:40,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash -627680115, now seen corresponding path program 1 times [2024-11-09 23:51:40,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:40,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659115900] [2024-11-09 23:51:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:40,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 23:51:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659115900] [2024-11-09 23:51:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659115900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:51:40,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656128789] [2024-11-09 23:51:40,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:40,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:51:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:40,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:51:40,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:51:40,540 INFO L87 Difference]: Start difference. First operand 22850 states and 30944 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 23:51:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:40,660 INFO L93 Difference]: Finished difference Result 38690 states and 52815 transitions. [2024-11-09 23:51:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:51:40,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 66 [2024-11-09 23:51:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:40,708 INFO L225 Difference]: With dead ends: 38690 [2024-11-09 23:51:40,708 INFO L226 Difference]: Without dead ends: 32132 [2024-11-09 23:51:40,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 23:51:40,726 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 356 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:40,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 572 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32132 states. [2024-11-09 23:51:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32132 to 27245. [2024-11-09 23:51:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27245 states, 27244 states have (on average 1.3523344589634414) internal successors, (36843), 27244 states have internal predecessors, (36843), 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 23:51:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27245 states to 27245 states and 36843 transitions. [2024-11-09 23:51:41,248 INFO L78 Accepts]: Start accepts. Automaton has 27245 states and 36843 transitions. Word has length 66 [2024-11-09 23:51:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:41,248 INFO L471 AbstractCegarLoop]: Abstraction has 27245 states and 36843 transitions. [2024-11-09 23:51:41,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 23:51:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 27245 states and 36843 transitions. [2024-11-09 23:51:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 23:51:41,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:41,251 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] [2024-11-09 23:51:41,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 23:51:41,251 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:41,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash -127590559, now seen corresponding path program 1 times [2024-11-09 23:51:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062345872] [2024-11-09 23:51:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:41,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:41,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062345872] [2024-11-09 23:51:41,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062345872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:41,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055992096] [2024-11-09 23:51:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:41,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:41,308 INFO L87 Difference]: Start difference. First operand 27245 states and 36843 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 23:51:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:41,556 INFO L93 Difference]: Finished difference Result 48938 states and 65853 transitions. [2024-11-09 23:51:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:41,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-09 23:51:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:41,603 INFO L225 Difference]: With dead ends: 48938 [2024-11-09 23:51:41,603 INFO L226 Difference]: Without dead ends: 27651 [2024-11-09 23:51:41,630 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 23:51:41,631 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 65 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:41,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 296 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:51:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27651 states. [2024-11-09 23:51:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27651 to 25831. [2024-11-09 23:51:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25831 states, 25830 states have (on average 1.337514518002323) internal successors, (34548), 25830 states have internal predecessors, (34548), 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 23:51:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25831 states to 25831 states and 34548 transitions. [2024-11-09 23:51:42,063 INFO L78 Accepts]: Start accepts. Automaton has 25831 states and 34548 transitions. Word has length 70 [2024-11-09 23:51:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:42,064 INFO L471 AbstractCegarLoop]: Abstraction has 25831 states and 34548 transitions. [2024-11-09 23:51:42,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 23:51:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25831 states and 34548 transitions. [2024-11-09 23:51:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 23:51:42,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:42,068 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] [2024-11-09 23:51:42,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 23:51:42,069 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:42,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:42,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1332680291, now seen corresponding path program 1 times [2024-11-09 23:51:42,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725621269] [2024-11-09 23:51:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:42,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:42,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:42,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725621269] [2024-11-09 23:51:42,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725621269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:51:42,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141649398] [2024-11-09 23:51:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:42,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:42,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:42,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:51:42,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 23:51:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:42,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 23:51:42,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:51:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:42,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:51:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141649398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:51:42,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:51:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 23:51:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151258833] [2024-11-09 23:51:42,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:51:42,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 23:51:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 23:51:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 23:51:42,832 INFO L87 Difference]: Start difference. First operand 25831 states and 34548 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 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 23:51:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:43,291 INFO L93 Difference]: Finished difference Result 67780 states and 91534 transitions. [2024-11-09 23:51:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 23:51:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 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 72 [2024-11-09 23:51:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:43,351 INFO L225 Difference]: With dead ends: 67780 [2024-11-09 23:51:43,351 INFO L226 Difference]: Without dead ends: 44566 [2024-11-09 23:51:43,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-09 23:51:43,379 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1403 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:43,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 328 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:51:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44566 states. [2024-11-09 23:51:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44566 to 30305. [2024-11-09 23:51:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30305 states, 30304 states have (on average 1.3405821013727561) internal successors, (40625), 30304 states have internal predecessors, (40625), 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 23:51:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30305 states to 30305 states and 40625 transitions. [2024-11-09 23:51:44,034 INFO L78 Accepts]: Start accepts. Automaton has 30305 states and 40625 transitions. Word has length 72 [2024-11-09 23:51:44,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:44,035 INFO L471 AbstractCegarLoop]: Abstraction has 30305 states and 40625 transitions. [2024-11-09 23:51:44,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 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 23:51:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30305 states and 40625 transitions. [2024-11-09 23:51:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 23:51:44,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:44,045 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] [2024-11-09 23:51:44,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 23:51:44,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 23:51:44,246 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:44,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash -704900088, now seen corresponding path program 1 times [2024-11-09 23:51:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547125611] [2024-11-09 23:51:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:44,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547125611] [2024-11-09 23:51:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547125611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:51:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805312913] [2024-11-09 23:51:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:44,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:44,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:51:44,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 23:51:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:44,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 23:51:44,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:51:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:44,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:51:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805312913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:51:44,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:51:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 23:51:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015262190] [2024-11-09 23:51:44,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:51:44,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 23:51:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 23:51:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 23:51:44,832 INFO L87 Difference]: Start difference. First operand 30305 states and 40625 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 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 23:51:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:45,256 INFO L93 Difference]: Finished difference Result 65028 states and 87752 transitions. [2024-11-09 23:51:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 23:51:45,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 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 72 [2024-11-09 23:51:45,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:45,314 INFO L225 Difference]: With dead ends: 65028 [2024-11-09 23:51:45,314 INFO L226 Difference]: Without dead ends: 44017 [2024-11-09 23:51:45,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-09 23:51:45,335 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 990 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:45,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 264 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:51:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44017 states. [2024-11-09 23:51:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44017 to 35131. [2024-11-09 23:51:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35131 states, 35130 states have (on average 1.3412752633077143) internal successors, (47119), 35130 states have internal predecessors, (47119), 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 23:51:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35131 states to 35131 states and 47119 transitions. [2024-11-09 23:51:45,805 INFO L78 Accepts]: Start accepts. Automaton has 35131 states and 47119 transitions. Word has length 72 [2024-11-09 23:51:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:45,805 INFO L471 AbstractCegarLoop]: Abstraction has 35131 states and 47119 transitions. [2024-11-09 23:51:45,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 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 23:51:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 35131 states and 47119 transitions. [2024-11-09 23:51:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 23:51:45,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:45,809 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] [2024-11-09 23:51:45,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 23:51:46,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:46,010 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:46,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1729310493, now seen corresponding path program 1 times [2024-11-09 23:51:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86308924] [2024-11-09 23:51:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86308924] [2024-11-09 23:51:46,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86308924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:51:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550432276] [2024-11-09 23:51:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:46,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:46,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:46,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:51:46,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 23:51:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:46,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 23:51:46,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:51:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:46,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:51:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550432276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:51:46,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:51:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 23:51:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073314431] [2024-11-09 23:51:46,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:51:46,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 23:51:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 23:51:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 23:51:46,747 INFO L87 Difference]: Start difference. First operand 35131 states and 47119 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 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 23:51:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:47,099 INFO L93 Difference]: Finished difference Result 70742 states and 94817 transitions. [2024-11-09 23:51:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 23:51:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 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 72 [2024-11-09 23:51:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:47,146 INFO L225 Difference]: With dead ends: 70742 [2024-11-09 23:51:47,146 INFO L226 Difference]: Without dead ends: 40463 [2024-11-09 23:51:47,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 23:51:47,180 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 731 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:47,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 254 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:51:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40463 states. [2024-11-09 23:51:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40463 to 35659. [2024-11-09 23:51:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35659 states, 35658 states have (on average 1.3361377530988838) internal successors, (47644), 35658 states have internal predecessors, (47644), 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 23:51:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35659 states to 35659 states and 47644 transitions. [2024-11-09 23:51:47,806 INFO L78 Accepts]: Start accepts. Automaton has 35659 states and 47644 transitions. Word has length 72 [2024-11-09 23:51:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:47,806 INFO L471 AbstractCegarLoop]: Abstraction has 35659 states and 47644 transitions. [2024-11-09 23:51:47,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 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 23:51:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 35659 states and 47644 transitions. [2024-11-09 23:51:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 23:51:47,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:47,810 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] [2024-11-09 23:51:47,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 23:51:48,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 23:51:48,010 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:48,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash 665390949, now seen corresponding path program 1 times [2024-11-09 23:51:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:48,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779002260] [2024-11-09 23:51:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:48,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:48,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:48,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779002260] [2024-11-09 23:51:48,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779002260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:51:48,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987969759] [2024-11-09 23:51:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:48,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:48,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:48,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:51:48,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 23:51:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:48,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 23:51:48,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:51:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:49,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:51:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987969759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:51:49,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:51:49,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 23:51:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250075376] [2024-11-09 23:51:49,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:51:49,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 23:51:49,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 23:51:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-09 23:51:49,735 INFO L87 Difference]: Start difference. First operand 35659 states and 47644 transitions. Second operand has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 20 states have internal predecessors, (174), 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 23:51:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:51,181 INFO L93 Difference]: Finished difference Result 164223 states and 219582 transitions. [2024-11-09 23:51:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 23:51:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 20 states have internal predecessors, (174), 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 74 [2024-11-09 23:51:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:51,332 INFO L225 Difference]: With dead ends: 164223 [2024-11-09 23:51:51,332 INFO L226 Difference]: Without dead ends: 128680 [2024-11-09 23:51:51,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 23:51:51,352 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 1436 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:51,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1102 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 23:51:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128680 states. [2024-11-09 23:51:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128680 to 78752. [2024-11-09 23:51:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78752 states, 78751 states have (on average 1.3271069573719698) internal successors, (104511), 78751 states have internal predecessors, (104511), 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 23:51:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78752 states to 78752 states and 104511 transitions. [2024-11-09 23:51:53,010 INFO L78 Accepts]: Start accepts. Automaton has 78752 states and 104511 transitions. Word has length 74 [2024-11-09 23:51:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:53,010 INFO L471 AbstractCegarLoop]: Abstraction has 78752 states and 104511 transitions. [2024-11-09 23:51:53,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.285714285714286) internal successors, (174), 20 states have internal predecessors, (174), 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 23:51:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 78752 states and 104511 transitions. [2024-11-09 23:51:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 23:51:53,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:53,013 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] [2024-11-09 23:51:53,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 23:51:53,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 23:51:53,214 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:53,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1583490970, now seen corresponding path program 1 times [2024-11-09 23:51:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:53,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867608645] [2024-11-09 23:51:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:53,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867608645] [2024-11-09 23:51:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867608645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:51:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543602542] [2024-11-09 23:51:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:53,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:53,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:51:53,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:51:53,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 23:51:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:53,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 23:51:53,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:51:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:53,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:51:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543602542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:51:54,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:51:54,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-09 23:51:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772614927] [2024-11-09 23:51:54,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:51:54,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 23:51:54,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 23:51:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-09 23:51:54,423 INFO L87 Difference]: Start difference. First operand 78752 states and 104511 transitions. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 22 states have internal predecessors, (161), 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 23:51:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:56,026 INFO L93 Difference]: Finished difference Result 304830 states and 405295 transitions. [2024-11-09 23:51:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 23:51:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 22 states have internal predecessors, (161), 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 74 [2024-11-09 23:51:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:56,338 INFO L225 Difference]: With dead ends: 304830 [2024-11-09 23:51:56,338 INFO L226 Difference]: Without dead ends: 226142 [2024-11-09 23:51:56,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=420, Invalid=1220, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 23:51:56,420 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 1386 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:56,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1342 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 23:51:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226142 states. [2024-11-09 23:51:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226142 to 168418. [2024-11-09 23:51:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168418 states, 168417 states have (on average 1.3159122891394575) internal successors, (221622), 168417 states have internal predecessors, (221622), 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 23:51:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168418 states to 168418 states and 221622 transitions. [2024-11-09 23:51:59,435 INFO L78 Accepts]: Start accepts. Automaton has 168418 states and 221622 transitions. Word has length 74 [2024-11-09 23:51:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:59,435 INFO L471 AbstractCegarLoop]: Abstraction has 168418 states and 221622 transitions. [2024-11-09 23:51:59,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 22 states have internal predecessors, (161), 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 23:51:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 168418 states and 221622 transitions. [2024-11-09 23:51:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 23:51:59,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:59,441 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] [2024-11-09 23:51:59,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 23:51:59,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:51:59,646 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:59,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1945961701, now seen corresponding path program 1 times [2024-11-09 23:51:59,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:59,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686560063] [2024-11-09 23:51:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:52:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:52:00,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:52:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686560063] [2024-11-09 23:52:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686560063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:52:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190224756] [2024-11-09 23:52:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:52:00,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:52:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:52:00,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:52:00,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 23:52:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:52:00,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 23:52:00,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:52:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:52:01,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:52:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:52:02,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190224756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:52:02,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:52:02,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-09 23:52:02,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069798813] [2024-11-09 23:52:02,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:52:02,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 23:52:02,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:52:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 23:52:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-09 23:52:02,299 INFO L87 Difference]: Start difference. First operand 168418 states and 221622 transitions. Second operand has 32 states, 32 states have (on average 5.96875) internal successors, (191), 32 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)