./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 23:50:19,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 23:50:19,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 23:50:19,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 23:50:19,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 23:50:19,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 23:50:19,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 23:50:19,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 23:50:19,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 23:50:19,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 23:50:19,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 23:50:19,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 23:50:19,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 23:50:19,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 23:50:19,875 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 23:50:19,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 23:50:19,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 23:50:19,876 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 23:50:19,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 23:50:19,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 23:50:19,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 23:50:19,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 23:50:19,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 23:50:19,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 23:50:19,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 23:50:19,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 23:50:19,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 23:50:19,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 23:50:19,882 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 23:50:19,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 23:50:19,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 23:50:19,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 23:50:19,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:50:19,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 23:50:19,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 23:50:19,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 23:50:19,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 23:50:19,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 23:50:19,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 23:50:19,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 23:50:19,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 23:50:19,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 23:50:19,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 [2024-11-09 23:50:20,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 23:50:20,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 23:50:20,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 23:50:20,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 23:50:20,162 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 23:50:20,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 23:50:21,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 23:50:21,834 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 23:50:21,835 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 23:50:21,851 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7c7f066/eb28c271d3034ddb898e6de70d91cddf/FLAG51da905f9 [2024-11-09 23:50:22,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7c7f066/eb28c271d3034ddb898e6de70d91cddf [2024-11-09 23:50:22,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 23:50:22,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 23:50:22,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 23:50:22,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 23:50:22,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 23:50:22,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b9c244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22, skipping insertion in model container [2024-11-09 23:50:22,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 23:50:22,409 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-09 23:50:22,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:50:22,457 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 23:50:22,504 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-09 23:50:22,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:50:22,542 INFO L204 MainTranslator]: Completed translation [2024-11-09 23:50:22,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22 WrapperNode [2024-11-09 23:50:22,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 23:50:22,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 23:50:22,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 23:50:22,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 23:50:22,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,613 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 362 [2024-11-09 23:50:22,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 23:50:22,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 23:50:22,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 23:50:22,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 23:50:22,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,646 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 23:50:22,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,654 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 23:50:22,663 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 23:50:22,663 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 23:50:22,663 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 23:50:22,664 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (1/1) ... [2024-11-09 23:50:22,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:50:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:22,706 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 23:50:22,710 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 23:50:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 23:50:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 23:50:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 23:50:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 23:50:22,878 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 23:50:22,881 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 23:50:23,321 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L449: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-09 23:50:23,321 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L385: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-09 23:50:23,322 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L477: havoc main_~node1____CPAchecker_TMP_1~0#1; [2024-11-09 23:50:23,322 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L271: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-09 23:50:23,322 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L172: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:50:23,322 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L172: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:50:23,322 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L172: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:50:23,323 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L172: havoc main_~node3__m3~0#1;havoc main_~node2__m2~0#1; [2024-11-09 23:50:23,323 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,323 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,323 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,323 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,324 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,324 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,324 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,324 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,325 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,325 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,325 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,326 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,326 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,327 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,327 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,328 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,328 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,328 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-09 23:50:23,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L207: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:50:23,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L207: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:50:23,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L207: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-09 23:50:23,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L299: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-09 23:50:23,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-09 23:50:23,359 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-09 23:50:23,360 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 23:50:23,376 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 23:50:23,376 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 23:50:23,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:50:23 BoogieIcfgContainer [2024-11-09 23:50:23,377 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 23:50:23,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 23:50:23,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 23:50:23,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 23:50:23,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:50:22" (1/3) ... [2024-11-09 23:50:23,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f07b018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:50:23, skipping insertion in model container [2024-11-09 23:50:23,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:50:22" (2/3) ... [2024-11-09 23:50:23,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f07b018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:50:23, skipping insertion in model container [2024-11-09 23:50:23,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:50:23" (3/3) ... [2024-11-09 23:50:23,388 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-09 23:50:23,407 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 23:50:23,408 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 23:50:23,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 23:50:23,489 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;@65a603d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 23:50:23,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 23:50:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 90 states have (on average 1.6333333333333333) internal successors, (147), 91 states have internal predecessors, (147), 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 23:50:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 23:50:23,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:23,506 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 23:50:23,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:23,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash -243444109, now seen corresponding path program 1 times [2024-11-09 23:50:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:23,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575118106] [2024-11-09 23:50:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:23,910 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 23:50:23,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:23,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575118106] [2024-11-09 23:50:23,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575118106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:23,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:23,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570867424] [2024-11-09 23:50:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:23,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:23,940 INFO L87 Difference]: Start difference. First operand has 92 states, 90 states have (on average 1.6333333333333333) internal successors, (147), 91 states have internal predecessors, (147), 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 23:50:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:24,011 INFO L93 Difference]: Finished difference Result 217 states and 336 transitions. [2024-11-09 23:50:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:24,014 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 23:50:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:24,025 INFO L225 Difference]: With dead ends: 217 [2024-11-09 23:50:24,025 INFO L226 Difference]: Without dead ends: 139 [2024-11-09 23:50:24,028 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 23:50:24,031 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 97 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 293 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 23:50:24,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 293 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-09 23:50:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2024-11-09 23:50:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4779411764705883) internal successors, (201), 136 states have internal predecessors, (201), 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 23:50:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 201 transitions. [2024-11-09 23:50:24,068 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 201 transitions. Word has length 38 [2024-11-09 23:50:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:24,069 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 201 transitions. [2024-11-09 23:50:24,069 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 23:50:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 201 transitions. [2024-11-09 23:50:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 23:50:24,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:24,071 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 23:50:24,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 23:50:24,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:24,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:24,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1894156470, now seen corresponding path program 1 times [2024-11-09 23:50:24,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:24,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229903697] [2024-11-09 23:50:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:24,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:24,211 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 23:50:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229903697] [2024-11-09 23:50:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229903697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:24,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:24,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:24,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010554141] [2024-11-09 23:50:24,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:24,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:24,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:24,219 INFO L87 Difference]: Start difference. First operand 137 states and 201 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 23:50:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:24,262 INFO L93 Difference]: Finished difference Result 337 states and 509 transitions. [2024-11-09 23:50:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:24,263 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 23:50:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:24,264 INFO L225 Difference]: With dead ends: 337 [2024-11-09 23:50:24,265 INFO L226 Difference]: Without dead ends: 220 [2024-11-09 23:50:24,266 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 23:50:24,267 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 82 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 245 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 23:50:24,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 245 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-09 23:50:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2024-11-09 23:50:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.4976958525345623) internal successors, (325), 217 states have internal predecessors, (325), 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 23:50:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 325 transitions. [2024-11-09 23:50:24,287 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 325 transitions. Word has length 39 [2024-11-09 23:50:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:24,287 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 325 transitions. [2024-11-09 23:50:24,288 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 23:50:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 325 transitions. [2024-11-09 23:50:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 23:50:24,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:24,289 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 23:50:24,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 23:50:24,290 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:24,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash 436630285, now seen corresponding path program 1 times [2024-11-09 23:50:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273782499] [2024-11-09 23:50:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:24,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:24,491 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 23:50:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:24,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273782499] [2024-11-09 23:50:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273782499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:24,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:24,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:50:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848116769] [2024-11-09 23:50:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:24,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:50:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:24,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:50:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:50:24,496 INFO L87 Difference]: Start difference. First operand 218 states and 325 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 23:50:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:24,603 INFO L93 Difference]: Finished difference Result 1010 states and 1545 transitions. [2024-11-09 23:50:24,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:50:24,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 23:50:24,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:24,610 INFO L225 Difference]: With dead ends: 1010 [2024-11-09 23:50:24,611 INFO L226 Difference]: Without dead ends: 812 [2024-11-09 23:50:24,613 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 23:50:24,616 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 522 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 721 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 23:50:24,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 721 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:50:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-11-09 23:50:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 414. [2024-11-09 23:50:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.5036319612590798) internal successors, (621), 413 states have internal predecessors, (621), 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 23:50:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 621 transitions. [2024-11-09 23:50:24,652 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 621 transitions. Word has length 40 [2024-11-09 23:50:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:24,652 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 621 transitions. [2024-11-09 23:50:24,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 23:50:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 621 transitions. [2024-11-09 23:50:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 23:50:24,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:24,654 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] [2024-11-09 23:50:24,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 23:50:24,655 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:24,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1274521331, now seen corresponding path program 1 times [2024-11-09 23:50:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:24,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442146986] [2024-11-09 23:50:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:24,799 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 23:50:24,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:24,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442146986] [2024-11-09 23:50:24,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442146986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:24,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:24,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:50:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788786138] [2024-11-09 23:50:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:24,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:50:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:50:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:50:24,803 INFO L87 Difference]: Start difference. First operand 414 states and 621 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 23:50:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:24,856 INFO L93 Difference]: Finished difference Result 1432 states and 2164 transitions. [2024-11-09 23:50:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:50:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2024-11-09 23:50:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:24,861 INFO L225 Difference]: With dead ends: 1432 [2024-11-09 23:50:24,861 INFO L226 Difference]: Without dead ends: 1038 [2024-11-09 23:50:24,862 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 23:50:24,864 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 286 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:24,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 352 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:24,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-09 23:50:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2024-11-09 23:50:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.5033881897386254) internal successors, (1553), 1033 states have internal predecessors, (1553), 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 23:50:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1553 transitions. [2024-11-09 23:50:24,896 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1553 transitions. Word has length 42 [2024-11-09 23:50:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:24,897 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1553 transitions. [2024-11-09 23:50:24,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 23:50:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1553 transitions. [2024-11-09 23:50:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 23:50:24,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:24,903 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 23:50:24,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 23:50:24,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:24,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1088617362, now seen corresponding path program 1 times [2024-11-09 23:50:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:24,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773505326] [2024-11-09 23:50:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:24,997 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 23:50:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773505326] [2024-11-09 23:50:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773505326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:24,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304463326] [2024-11-09 23:50:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:25,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:25,002 INFO L87 Difference]: Start difference. First operand 1034 states and 1553 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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 23:50:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:25,033 INFO L93 Difference]: Finished difference Result 2646 states and 3963 transitions. [2024-11-09 23:50:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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 23:50:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:25,041 INFO L225 Difference]: With dead ends: 2646 [2024-11-09 23:50:25,041 INFO L226 Difference]: Without dead ends: 1632 [2024-11-09 23:50:25,043 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 23:50:25,046 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 286 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 23:50:25,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-09 23:50:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2024-11-09 23:50:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 1.476365868631062) internal successors, (2405), 1629 states have internal predecessors, (2405), 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 23:50:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2405 transitions. [2024-11-09 23:50:25,083 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2405 transitions. Word has length 43 [2024-11-09 23:50:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:25,084 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2405 transitions. [2024-11-09 23:50:25,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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 23:50:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2405 transitions. [2024-11-09 23:50:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 23:50:25,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:25,090 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] [2024-11-09 23:50:25,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 23:50:25,091 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:25,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1126504587, now seen corresponding path program 1 times [2024-11-09 23:50:25,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:25,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359662616] [2024-11-09 23:50:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:25,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:25,439 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 23:50:25,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:25,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359662616] [2024-11-09 23:50:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359662616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:25,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:25,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:50:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442092342] [2024-11-09 23:50:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:25,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:50:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:50:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:50:25,443 INFO L87 Difference]: Start difference. First operand 1630 states and 2405 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 23:50:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:25,482 INFO L93 Difference]: Finished difference Result 1776 states and 2598 transitions. [2024-11-09 23:50:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:50:25,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2024-11-09 23:50:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:25,490 INFO L225 Difference]: With dead ends: 1776 [2024-11-09 23:50:25,491 INFO L226 Difference]: Without dead ends: 1774 [2024-11-09 23:50:25,491 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 23:50:25,494 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:25,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2024-11-09 23:50:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1774. [2024-11-09 23:50:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 1.4376762549351383) internal successors, (2549), 1773 states have internal predecessors, (2549), 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 23:50:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2549 transitions. [2024-11-09 23:50:25,531 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2549 transitions. Word has length 44 [2024-11-09 23:50:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:25,532 INFO L471 AbstractCegarLoop]: Abstraction has 1774 states and 2549 transitions. [2024-11-09 23:50:25,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 23:50:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2549 transitions. [2024-11-09 23:50:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 23:50:25,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:25,533 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 23:50:25,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 23:50:25,533 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:25,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 738328125, now seen corresponding path program 1 times [2024-11-09 23:50:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324112795] [2024-11-09 23:50:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:25,627 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 23:50:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324112795] [2024-11-09 23:50:25,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324112795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:25,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:25,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379926670] [2024-11-09 23:50:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:25,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:25,631 INFO L87 Difference]: Start difference. First operand 1774 states and 2549 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 23:50:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:25,664 INFO L93 Difference]: Finished difference Result 4272 states and 6161 transitions. [2024-11-09 23:50:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 23:50:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:25,673 INFO L225 Difference]: With dead ends: 4272 [2024-11-09 23:50:25,674 INFO L226 Difference]: Without dead ends: 2518 [2024-11-09 23:50:25,676 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 23:50:25,677 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 71 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:25,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 224 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2024-11-09 23:50:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2496. [2024-11-09 23:50:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.4312625250501) internal successors, (3571), 2495 states have internal predecessors, (3571), 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 23:50:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3571 transitions. [2024-11-09 23:50:25,743 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3571 transitions. Word has length 45 [2024-11-09 23:50:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:25,743 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 3571 transitions. [2024-11-09 23:50:25,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 23:50:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3571 transitions. [2024-11-09 23:50:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 23:50:25,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:25,745 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:50:25,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 23:50:25,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:25,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash -554513390, now seen corresponding path program 1 times [2024-11-09 23:50:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480509453] [2024-11-09 23:50:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480509453] [2024-11-09 23:50:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480509453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:50:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439146452] [2024-11-09 23:50:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:50:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:26,147 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 23:50:26,148 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 23:50:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:26,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 23:50:26,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:50:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:27,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:50:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439146452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:50:27,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:50:27,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-09 23:50:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639091777] [2024-11-09 23:50:27,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:50:27,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 23:50:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 23:50:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-09 23:50:27,537 INFO L87 Difference]: Start difference. First operand 2496 states and 3571 transitions. Second operand has 23 states, 23 states have (on average 8.0) internal successors, (184), 23 states have internal predecessors, (184), 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 23:50:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:32,945 INFO L93 Difference]: Finished difference Result 15834 states and 22641 transitions. [2024-11-09 23:50:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-09 23:50:32,946 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 23 states have internal predecessors, (184), 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 23:50:32,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:32,991 INFO L225 Difference]: With dead ends: 15834 [2024-11-09 23:50:32,991 INFO L226 Difference]: Without dead ends: 13360 [2024-11-09 23:50:33,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2916, Invalid=12336, Unknown=0, NotChecked=0, Total=15252 [2024-11-09 23:50:33,006 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 6614 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6614 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:33,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6614 Valid, 1591 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 23:50:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13360 states. [2024-11-09 23:50:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13360 to 10930. [2024-11-09 23:50:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10930 states, 10929 states have (on average 1.4112910604812883) internal successors, (15424), 10929 states have internal predecessors, (15424), 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 23:50:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10930 states to 10930 states and 15424 transitions. [2024-11-09 23:50:33,281 INFO L78 Accepts]: Start accepts. Automaton has 10930 states and 15424 transitions. Word has length 65 [2024-11-09 23:50:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:33,282 INFO L471 AbstractCegarLoop]: Abstraction has 10930 states and 15424 transitions. [2024-11-09 23:50:33,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 23 states have internal predecessors, (184), 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 23:50:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10930 states and 15424 transitions. [2024-11-09 23:50:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:50:33,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:33,285 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 23:50:33,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 23:50:33,486 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 23:50:33,486 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:33,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:33,487 INFO L85 PathProgramCache]: Analyzing trace with hash 676447439, now seen corresponding path program 1 times [2024-11-09 23:50:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:33,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551104892] [2024-11-09 23:50:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:33,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551104892] [2024-11-09 23:50:33,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551104892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:33,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:33,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702996812] [2024-11-09 23:50:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:33,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:33,556 INFO L87 Difference]: Start difference. First operand 10930 states and 15424 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 23:50:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:33,635 INFO L93 Difference]: Finished difference Result 25162 states and 35368 transitions. [2024-11-09 23:50:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:33,636 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 23:50:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:33,681 INFO L225 Difference]: With dead ends: 25162 [2024-11-09 23:50:33,681 INFO L226 Difference]: Without dead ends: 17344 [2024-11-09 23:50:33,695 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 23:50:33,696 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 66 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 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 23:50:33,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17344 states. [2024-11-09 23:50:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17344 to 17342. [2024-11-09 23:50:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17342 states, 17341 states have (on average 1.389654575860677) internal successors, (24098), 17341 states have internal predecessors, (24098), 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 23:50:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17342 states to 17342 states and 24098 transitions. [2024-11-09 23:50:34,065 INFO L78 Accepts]: Start accepts. Automaton has 17342 states and 24098 transitions. Word has length 66 [2024-11-09 23:50:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:34,065 INFO L471 AbstractCegarLoop]: Abstraction has 17342 states and 24098 transitions. [2024-11-09 23:50:34,066 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 23:50:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 17342 states and 24098 transitions. [2024-11-09 23:50:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:50:34,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:34,068 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 23:50:34,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 23:50:34,068 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:34,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:34,069 INFO L85 PathProgramCache]: Analyzing trace with hash -521097102, now seen corresponding path program 1 times [2024-11-09 23:50:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:34,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55293132] [2024-11-09 23:50:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:34,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 23:50:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:34,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55293132] [2024-11-09 23:50:34,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55293132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:34,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:34,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:50:34,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725280353] [2024-11-09 23:50:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:34,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:50:34,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:50:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:50:34,191 INFO L87 Difference]: Start difference. First operand 17342 states and 24098 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 23:50:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:34,395 INFO L93 Difference]: Finished difference Result 34999 states and 48952 transitions. [2024-11-09 23:50:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:50:34,399 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 23:50:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:34,452 INFO L225 Difference]: With dead ends: 34999 [2024-11-09 23:50:34,452 INFO L226 Difference]: Without dead ends: 27949 [2024-11-09 23:50:34,463 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 23:50:34,464 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 361 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 614 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 23:50:34,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 614 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27949 states. [2024-11-09 23:50:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27949 to 24191. [2024-11-09 23:50:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24191 states, 24190 states have (on average 1.384869780901199) internal successors, (33500), 24190 states have internal predecessors, (33500), 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 23:50:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24191 states to 24191 states and 33500 transitions. [2024-11-09 23:50:34,833 INFO L78 Accepts]: Start accepts. Automaton has 24191 states and 33500 transitions. Word has length 66 [2024-11-09 23:50:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:34,833 INFO L471 AbstractCegarLoop]: Abstraction has 24191 states and 33500 transitions. [2024-11-09 23:50:34,834 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 23:50:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 24191 states and 33500 transitions. [2024-11-09 23:50:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:50:34,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:34,836 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 23:50:34,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 23:50:34,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:34,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1524988275, now seen corresponding path program 1 times [2024-11-09 23:50:34,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:34,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605852941] [2024-11-09 23:50:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:34,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605852941] [2024-11-09 23:50:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605852941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:34,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802484326] [2024-11-09 23:50:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:34,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:34,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:34,887 INFO L87 Difference]: Start difference. First operand 24191 states and 33500 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 23:50:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:35,109 INFO L93 Difference]: Finished difference Result 39632 states and 54776 transitions. [2024-11-09 23:50:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:35,110 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 23:50:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:35,151 INFO L225 Difference]: With dead ends: 39632 [2024-11-09 23:50:35,152 INFO L226 Difference]: Without dead ends: 24356 [2024-11-09 23:50:35,176 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 23:50:35,177 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 70 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 286 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 23:50:35,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 286 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:50:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24356 states. [2024-11-09 23:50:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24356 to 21881. [2024-11-09 23:50:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21881 states, 21880 states have (on average 1.3627056672760511) internal successors, (29816), 21880 states have internal predecessors, (29816), 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 23:50:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21881 states to 21881 states and 29816 transitions. [2024-11-09 23:50:35,563 INFO L78 Accepts]: Start accepts. Automaton has 21881 states and 29816 transitions. Word has length 66 [2024-11-09 23:50:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:35,563 INFO L471 AbstractCegarLoop]: Abstraction has 21881 states and 29816 transitions. [2024-11-09 23:50:35,564 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 23:50:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21881 states and 29816 transitions. [2024-11-09 23:50:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 23:50:35,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:35,566 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 23:50:35,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 23:50:35,566 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:35,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash 320786287, now seen corresponding path program 1 times [2024-11-09 23:50:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704789975] [2024-11-09 23:50:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 23:50:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704789975] [2024-11-09 23:50:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704789975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:35,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:50:35,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438427809] [2024-11-09 23:50:35,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:35,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:50:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:50:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:50:35,680 INFO L87 Difference]: Start difference. First operand 21881 states and 29816 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 23:50:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:35,944 INFO L93 Difference]: Finished difference Result 39484 states and 54345 transitions. [2024-11-09 23:50:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:50:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 23:50:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:35,989 INFO L225 Difference]: With dead ends: 39484 [2024-11-09 23:50:35,989 INFO L226 Difference]: Without dead ends: 31796 [2024-11-09 23:50:36,005 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 23:50:36,006 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 360 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:36,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 582 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:50:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31796 states. [2024-11-09 23:50:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31796 to 28002. [2024-11-09 23:50:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28002 states, 28001 states have (on average 1.3581657797935789) internal successors, (38030), 28001 states have internal predecessors, (38030), 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 23:50:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28002 states to 28002 states and 38030 transitions. [2024-11-09 23:50:36,401 INFO L78 Accepts]: Start accepts. Automaton has 28002 states and 38030 transitions. Word has length 66 [2024-11-09 23:50:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:36,401 INFO L471 AbstractCegarLoop]: Abstraction has 28002 states and 38030 transitions. [2024-11-09 23:50:36,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 23:50:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28002 states and 38030 transitions. [2024-11-09 23:50:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 23:50:36,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:36,406 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 23:50:36,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 23:50:36,406 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:36,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash 496452798, now seen corresponding path program 1 times [2024-11-09 23:50:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:36,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601715806] [2024-11-09 23:50:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 23:50:36,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601715806] [2024-11-09 23:50:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601715806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:36,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:36,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:50:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844619431] [2024-11-09 23:50:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:36,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:50:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:50:36,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:50:36,498 INFO L87 Difference]: Start difference. First operand 28002 states and 38030 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 23:50:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:36,759 INFO L93 Difference]: Finished difference Result 39174 states and 53716 transitions. [2024-11-09 23:50:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:50:36,760 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 67 [2024-11-09 23:50:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:36,797 INFO L225 Difference]: With dead ends: 39174 [2024-11-09 23:50:36,798 INFO L226 Difference]: Without dead ends: 35428 [2024-11-09 23:50:36,813 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 23:50:36,813 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 367 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 586 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 23:50:36,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 586 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35428 states. [2024-11-09 23:50:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35428 to 31646. [2024-11-09 23:50:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31646 states, 31645 states have (on average 1.359582872491705) internal successors, (43024), 31645 states have internal predecessors, (43024), 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 23:50:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31646 states to 31646 states and 43024 transitions. [2024-11-09 23:50:37,254 INFO L78 Accepts]: Start accepts. Automaton has 31646 states and 43024 transitions. Word has length 67 [2024-11-09 23:50:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:37,255 INFO L471 AbstractCegarLoop]: Abstraction has 31646 states and 43024 transitions. [2024-11-09 23:50:37,255 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 23:50:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 31646 states and 43024 transitions. [2024-11-09 23:50:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 23:50:37,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:37,258 INFO L215 NwaCegarLoop]: trace histogram [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 23:50:37,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 23:50:37,258 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:37,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1998807193, now seen corresponding path program 1 times [2024-11-09 23:50:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:37,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918246906] [2024-11-09 23:50:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918246906] [2024-11-09 23:50:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918246906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:50:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:50:37,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:50:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602049670] [2024-11-09 23:50:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:50:37,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:50:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:37,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:50:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:50:37,319 INFO L87 Difference]: Start difference. First operand 31646 states and 43024 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 23:50:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:37,630 INFO L93 Difference]: Finished difference Result 77435 states and 104883 transitions. [2024-11-09 23:50:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:50:37,631 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 23:50:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:37,687 INFO L225 Difference]: With dead ends: 77435 [2024-11-09 23:50:37,687 INFO L226 Difference]: Without dead ends: 47792 [2024-11-09 23:50:37,711 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 23:50:37,711 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 65 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 276 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 23:50:37,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 276 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:50:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47792 states. [2024-11-09 23:50:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47792 to 45835. [2024-11-09 23:50:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45835 states, 45834 states have (on average 1.3400095998603656) internal successors, (61418), 45834 states have internal predecessors, (61418), 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 23:50:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45835 states to 45835 states and 61418 transitions. [2024-11-09 23:50:38,389 INFO L78 Accepts]: Start accepts. Automaton has 45835 states and 61418 transitions. Word has length 70 [2024-11-09 23:50:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:38,389 INFO L471 AbstractCegarLoop]: Abstraction has 45835 states and 61418 transitions. [2024-11-09 23:50:38,390 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 23:50:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 45835 states and 61418 transitions. [2024-11-09 23:50:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 23:50:38,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:38,396 INFO L215 NwaCegarLoop]: trace histogram [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 23:50:38,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 23:50:38,397 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:38,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1711802650, now seen corresponding path program 1 times [2024-11-09 23:50:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43301538] [2024-11-09 23:50:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:38,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:38,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:38,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43301538] [2024-11-09 23:50:38,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43301538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:50:38,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550284255] [2024-11-09 23:50:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:38,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:50:38,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:38,587 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 23:50:38,589 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 23:50:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:38,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 23:50:38,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:50:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:38,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:50:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550284255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:50:39,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:50:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 23:50:39,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963815888] [2024-11-09 23:50:39,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:50:39,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 23:50:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 23:50:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 23:50:39,042 INFO L87 Difference]: Start difference. First operand 45835 states and 61418 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 23:50:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:39,474 INFO L93 Difference]: Finished difference Result 90524 states and 121886 transitions. [2024-11-09 23:50:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 23:50:39,475 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 23:50:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:39,550 INFO L225 Difference]: With dead ends: 90524 [2024-11-09 23:50:39,550 INFO L226 Difference]: Without dead ends: 68454 [2024-11-09 23:50:39,577 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 23:50:39,578 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 1207 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:39,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 264 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:50:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68454 states. [2024-11-09 23:50:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68454 to 54002. [2024-11-09 23:50:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54002 states, 54001 states have (on average 1.3388826132849392) internal successors, (72301), 54001 states have internal predecessors, (72301), 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 23:50:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54002 states to 54002 states and 72301 transitions. [2024-11-09 23:50:40,454 INFO L78 Accepts]: Start accepts. Automaton has 54002 states and 72301 transitions. Word has length 72 [2024-11-09 23:50:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:40,454 INFO L471 AbstractCegarLoop]: Abstraction has 54002 states and 72301 transitions. [2024-11-09 23:50:40,454 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 23:50:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 54002 states and 72301 transitions. [2024-11-09 23:50:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 23:50:40,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:40,462 INFO L215 NwaCegarLoop]: trace histogram [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 23:50:40,504 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 23:50:40,663 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 23:50:40,663 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:40,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2144232329, now seen corresponding path program 1 times [2024-11-09 23:50:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728812006] [2024-11-09 23:50:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:40,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728812006] [2024-11-09 23:50:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728812006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:50:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177907562] [2024-11-09 23:50:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:40,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:50:40,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:40,811 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 23:50:40,813 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 23:50:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:40,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 23:50:40,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:50:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:41,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:50:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177907562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:50:41,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:50:41,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 23:50:41,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621789153] [2024-11-09 23:50:41,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:50:41,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 23:50:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:41,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 23:50:41,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 23:50:41,225 INFO L87 Difference]: Start difference. First operand 54002 states and 72301 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 23:50:41,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:41,632 INFO L93 Difference]: Finished difference Result 114673 states and 153327 transitions. [2024-11-09 23:50:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 23:50:41,633 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 23:50:41,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:41,707 INFO L225 Difference]: With dead ends: 114673 [2024-11-09 23:50:41,707 INFO L226 Difference]: Without dead ends: 62090 [2024-11-09 23:50:41,758 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 23:50:41,759 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 944 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:41,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 264 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:50:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62090 states. [2024-11-09 23:50:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62090 to 55080. [2024-11-09 23:50:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55080 states, 55079 states have (on average 1.3325223769494725) internal successors, (73394), 55079 states have internal predecessors, (73394), 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 23:50:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55080 states to 55080 states and 73394 transitions. [2024-11-09 23:50:42,946 INFO L78 Accepts]: Start accepts. Automaton has 55080 states and 73394 transitions. Word has length 72 [2024-11-09 23:50:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:42,947 INFO L471 AbstractCegarLoop]: Abstraction has 55080 states and 73394 transitions. [2024-11-09 23:50:42,947 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 23:50:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 55080 states and 73394 transitions. [2024-11-09 23:50:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 23:50:42,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:42,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:50:43,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 23:50:43,155 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 23:50:43,155 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:43,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1980600020, now seen corresponding path program 1 times [2024-11-09 23:50:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92054588] [2024-11-09 23:50:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:43,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92054588] [2024-11-09 23:50:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92054588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:50:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982618095] [2024-11-09 23:50:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:43,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:50:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:43,277 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 23:50:43,279 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 23:50:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:43,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 23:50:43,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:50:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:43,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:50:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:43,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982618095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:50:43,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:50:43,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 23:50:43,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876309991] [2024-11-09 23:50:43,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:50:43,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 23:50:43,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 23:50:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 23:50:43,693 INFO L87 Difference]: Start difference. First operand 55080 states and 73394 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 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 23:50:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:44,156 INFO L93 Difference]: Finished difference Result 146496 states and 196760 transitions. [2024-11-09 23:50:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 23:50:44,157 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 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 73 [2024-11-09 23:50:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:44,264 INFO L225 Difference]: With dead ends: 146496 [2024-11-09 23:50:44,264 INFO L226 Difference]: Without dead ends: 96126 [2024-11-09 23:50:44,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 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 23:50:44,313 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 947 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:44,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 452 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:50:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96126 states. [2024-11-09 23:50:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96126 to 63584. [2024-11-09 23:50:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63584 states, 63583 states have (on average 1.3364893131811961) internal successors, (84978), 63583 states have internal predecessors, (84978), 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 23:50:45,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63584 states to 63584 states and 84978 transitions. [2024-11-09 23:50:45,537 INFO L78 Accepts]: Start accepts. Automaton has 63584 states and 84978 transitions. Word has length 73 [2024-11-09 23:50:45,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:45,538 INFO L471 AbstractCegarLoop]: Abstraction has 63584 states and 84978 transitions. [2024-11-09 23:50:45,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 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 23:50:45,538 INFO L276 IsEmpty]: Start isEmpty. Operand 63584 states and 84978 transitions. [2024-11-09 23:50:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 23:50:45,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:45,543 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:50:45,557 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 23:50:45,743 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 23:50:45,744 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:45,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 563376519, now seen corresponding path program 1 times [2024-11-09 23:50:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:45,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216759062] [2024-11-09 23:50:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:46,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216759062] [2024-11-09 23:50:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216759062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:50:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066817334] [2024-11-09 23:50:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:46,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:50:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:46,098 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 23:50:46,099 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 23:50:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:46,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 23:50:46,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:50:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:46,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:50:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066817334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:50:47,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:50:47,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 23:50:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040772740] [2024-11-09 23:50:47,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:50:47,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 23:50:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 23:50:47,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-09 23:50:47,360 INFO L87 Difference]: Start difference. First operand 63584 states and 84978 transitions. Second operand has 21 states, 21 states have (on average 8.238095238095237) internal successors, (173), 20 states have internal predecessors, (173), 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 23:50:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:49,084 INFO L93 Difference]: Finished difference Result 294372 states and 392905 transitions. [2024-11-09 23:50:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 23:50:49,084 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.238095238095237) internal successors, (173), 20 states have internal predecessors, (173), 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 23:50:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:49,359 INFO L225 Difference]: With dead ends: 294372 [2024-11-09 23:50:49,359 INFO L226 Difference]: Without dead ends: 230931 [2024-11-09 23:50:49,448 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 23:50:49,449 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 1576 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:49,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 1231 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 23:50:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230931 states. [2024-11-09 23:50:51,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230931 to 141380. [2024-11-09 23:50:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141380 states, 141379 states have (on average 1.3275309628728453) internal successors, (187685), 141379 states have internal predecessors, (187685), 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 23:50:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141380 states to 141380 states and 187685 transitions. [2024-11-09 23:50:52,114 INFO L78 Accepts]: Start accepts. Automaton has 141380 states and 187685 transitions. Word has length 74 [2024-11-09 23:50:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:50:52,114 INFO L471 AbstractCegarLoop]: Abstraction has 141380 states and 187685 transitions. [2024-11-09 23:50:52,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.238095238095237) internal successors, (173), 20 states have internal predecessors, (173), 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 23:50:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 141380 states and 187685 transitions. [2024-11-09 23:50:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 23:50:52,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:50:52,121 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:50:52,135 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 23:50:52,322 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 23:50:52,322 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:50:52,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:50:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1685505400, now seen corresponding path program 1 times [2024-11-09 23:50:52,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:50:52,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423196732] [2024-11-09 23:50:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:50:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:52,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:50:52,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423196732] [2024-11-09 23:50:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423196732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:50:52,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002012619] [2024-11-09 23:50:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:50:52,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:50:52,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:50:52,620 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 23:50:52,621 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 23:50:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:50:52,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 23:50:52,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:50:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:53,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:50:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:50:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002012619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:50:53,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:50:53,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-09 23:50:53,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466264619] [2024-11-09 23:50:53,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:50:53,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 23:50:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:50:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 23:50:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-09 23:50:53,579 INFO L87 Difference]: Start difference. First operand 141380 states and 187685 transitions. Second operand has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 22 states have internal predecessors, (160), 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 23:50:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:50:56,538 INFO L93 Difference]: Finished difference Result 549720 states and 730243 transitions. [2024-11-09 23:50:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 23:50:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 22 states have internal predecessors, (160), 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 23:50:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:50:57,240 INFO L225 Difference]: With dead ends: 549720 [2024-11-09 23:50:57,240 INFO L226 Difference]: Without dead ends: 408357 [2024-11-09 23:50:57,321 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 23:50:57,321 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 605 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 23:50:57,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1380 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 23:50:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408357 states. [2024-11-09 23:51:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408357 to 303257. [2024-11-09 23:51:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303257 states, 303256 states have (on average 1.3178271823146122) internal successors, (399639), 303256 states have internal predecessors, (399639), 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 23:51:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303257 states to 303257 states and 399639 transitions. [2024-11-09 23:51:02,937 INFO L78 Accepts]: Start accepts. Automaton has 303257 states and 399639 transitions. Word has length 74 [2024-11-09 23:51:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:02,938 INFO L471 AbstractCegarLoop]: Abstraction has 303257 states and 399639 transitions. [2024-11-09 23:51:02,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 22 states have internal predecessors, (160), 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 23:51:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 303257 states and 399639 transitions. [2024-11-09 23:51:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 23:51:02,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:02,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:51:02,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 23:51:03,150 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 23:51:03,151 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:03,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:03,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1277530428, now seen corresponding path program 1 times [2024-11-09 23:51:03,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:03,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080237560] [2024-11-09 23:51:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 23:51:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080237560] [2024-11-09 23:51:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080237560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:03,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058698880] [2024-11-09 23:51:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:03,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:03,190 INFO L87 Difference]: Start difference. First operand 303257 states and 399639 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 23:51:05,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:05,375 INFO L93 Difference]: Finished difference Result 580526 states and 766653 transitions. [2024-11-09 23:51:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 75 [2024-11-09 23:51:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:05,753 INFO L225 Difference]: With dead ends: 580526 [2024-11-09 23:51:05,753 INFO L226 Difference]: Without dead ends: 277852 [2024-11-09 23:51:05,870 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 23:51:05,871 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 96 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:05,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 141 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:51:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277852 states. [2024-11-09 23:51:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277852 to 263675. [2024-11-09 23:51:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263675 states, 263674 states have (on average 1.3027753968916163) internal successors, (343508), 263674 states have internal predecessors, (343508), 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 23:51:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263675 states to 263675 states and 343508 transitions. [2024-11-09 23:51:10,493 INFO L78 Accepts]: Start accepts. Automaton has 263675 states and 343508 transitions. Word has length 75 [2024-11-09 23:51:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:10,493 INFO L471 AbstractCegarLoop]: Abstraction has 263675 states and 343508 transitions. [2024-11-09 23:51:10,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 23:51:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 263675 states and 343508 transitions. [2024-11-09 23:51:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 23:51:10,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:10,500 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:51:10,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 23:51:10,500 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:10,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1727296505, now seen corresponding path program 1 times [2024-11-09 23:51:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779295171] [2024-11-09 23:51:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 23:51:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:10,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779295171] [2024-11-09 23:51:10,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779295171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:10,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:10,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:10,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296157345] [2024-11-09 23:51:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:10,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:10,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:10,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:10,537 INFO L87 Difference]: Start difference. First operand 263675 states and 343508 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 23:51:12,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:51:12,620 INFO L93 Difference]: Finished difference Result 495791 states and 646290 transitions. [2024-11-09 23:51:12,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:51:12,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 75 [2024-11-09 23:51:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:51:12,980 INFO L225 Difference]: With dead ends: 495791 [2024-11-09 23:51:12,981 INFO L226 Difference]: Without dead ends: 232913 [2024-11-09 23:51:13,117 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 23:51:13,118 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 87 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:51:13,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 131 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:51:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232913 states. [2024-11-09 23:51:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232913 to 229444. [2024-11-09 23:51:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229444 states, 229443 states have (on average 1.2856787960408467) internal successors, (294990), 229443 states have internal predecessors, (294990), 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 23:51:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229444 states to 229444 states and 294990 transitions. [2024-11-09 23:51:16,395 INFO L78 Accepts]: Start accepts. Automaton has 229444 states and 294990 transitions. Word has length 75 [2024-11-09 23:51:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:51:16,395 INFO L471 AbstractCegarLoop]: Abstraction has 229444 states and 294990 transitions. [2024-11-09 23:51:16,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 23:51:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 229444 states and 294990 transitions. [2024-11-09 23:51:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 23:51:16,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:51:16,400 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:51:16,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 23:51:16,400 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:51:16,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:51:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2097329930, now seen corresponding path program 1 times [2024-11-09 23:51:16,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:51:16,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608454055] [2024-11-09 23:51:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:51:16,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:51:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:51:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:51:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:51:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608454055] [2024-11-09 23:51:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608454055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:51:16,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:51:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:51:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532060277] [2024-11-09 23:51:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:51:16,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:51:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:51:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:51:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:51:16,452 INFO L87 Difference]: Start difference. First operand 229444 states and 294990 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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)