./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-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/float-benchs/zonotope_3.c.v+lhb-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 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 20:33:46,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 20:33:46,523 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 20:33:46,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 20:33:46,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 20:33:46,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 20:33:46,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 20:33:46,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 20:33:46,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 20:33:46,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 20:33:46,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 20:33:46,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 20:33:46,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 20:33:46,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 20:33:46,563 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 20:33:46,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 20:33:46,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 20:33:46,564 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 20:33:46,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 20:33:46,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 20:33:46,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 20:33:46,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 20:33:46,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 20:33:46,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 20:33:46,569 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 20:33:46,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 20:33:46,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 20:33:46,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 20:33:46,570 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 20:33:46,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 20:33:46,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 20:33:46,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 20:33:46,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 20:33:46,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 20:33:46,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 20:33:46,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 20:33:46,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 20:33:46,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 20:33:46,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 20:33:46,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 20:33:46,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 20:33:46,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 20:33:46,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e [2024-11-09 20:33:46,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 20:33:46,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 20:33:46,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 20:33:46,862 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 20:33:46,863 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 20:33:46,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2024-11-09 20:33:48,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 20:33:48,557 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 20:33:48,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2024-11-09 20:33:48,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e307a268/f4bdb158d37847959dd524ee65d67148/FLAG8f7b37733 [2024-11-09 20:33:48,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e307a268/f4bdb158d37847959dd524ee65d67148 [2024-11-09 20:33:48,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 20:33:48,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 20:33:48,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 20:33:48,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 20:33:48,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 20:33:48,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:48" (1/1) ... [2024-11-09 20:33:48,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549fdf1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:48, skipping insertion in model container [2024-11-09 20:33:48,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:48" (1/1) ... [2024-11-09 20:33:48,952 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 20:33:49,278 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2024-11-09 20:33:49,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 20:33:49,306 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 20:33:49,356 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2024-11-09 20:33:49,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 20:33:49,384 INFO L204 MainTranslator]: Completed translation [2024-11-09 20:33:49,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49 WrapperNode [2024-11-09 20:33:49,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 20:33:49,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 20:33:49,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 20:33:49,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 20:33:49,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,432 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2024-11-09 20:33:49,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 20:33:49,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 20:33:49,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 20:33:49,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 20:33:49,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,474 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 20:33:49,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,483 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 20:33:49,494 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 20:33:49,494 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 20:33:49,494 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 20:33:49,495 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (1/1) ... [2024-11-09 20:33:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 20:33:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:33:49,527 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 20:33:49,530 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 20:33:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 20:33:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 20:33:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 20:33:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 20:33:49,673 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 20:33:49,675 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 20:33:50,013 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L300: havoc main_~__tmp_24~0#1, main_~g__x~11#1;havoc main_~__tmp_23~0#1, main_~f__x~11#1, main_~main____CPAchecker_TMP_1~4#1;havoc main_~__tmp_22~0#1, main_~g__x~10#1;havoc main_~__tmp_21~0#1, main_~f__x~10#1;havoc main_~main____CPAchecker_TMP_0~4#1; [2024-11-09 20:33:50,014 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L300: havoc main_~__tmp_24~0#1, main_~g__x~11#1;havoc main_~__tmp_23~0#1, main_~f__x~11#1, main_~main____CPAchecker_TMP_1~4#1;havoc main_~__tmp_22~0#1, main_~g__x~10#1;havoc main_~__tmp_21~0#1, main_~f__x~10#1;havoc main_~main____CPAchecker_TMP_0~4#1; [2024-11-09 20:33:50,014 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L300: havoc main_~__tmp_24~0#1, main_~g__x~11#1;havoc main_~__tmp_23~0#1, main_~f__x~11#1, main_~main____CPAchecker_TMP_1~4#1;havoc main_~__tmp_22~0#1, main_~g__x~10#1;havoc main_~__tmp_21~0#1, main_~f__x~10#1;havoc main_~main____CPAchecker_TMP_0~4#1; [2024-11-09 20:33:50,014 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L342: havoc main_~__tmp_28~0#1, main_~g__x~13#1;havoc main_~__tmp_27~0#1, main_~f__x~13#1, main_~main____CPAchecker_TMP_1~5#1;havoc main_~__tmp_26~0#1, main_~g__x~12#1;havoc main_~__tmp_25~0#1, main_~f__x~12#1;havoc main_~main____CPAchecker_TMP_0~5#1; [2024-11-09 20:33:50,015 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L342: havoc main_~__tmp_28~0#1, main_~g__x~13#1;havoc main_~__tmp_27~0#1, main_~f__x~13#1, main_~main____CPAchecker_TMP_1~5#1;havoc main_~__tmp_26~0#1, main_~g__x~12#1;havoc main_~__tmp_25~0#1, main_~f__x~12#1;havoc main_~main____CPAchecker_TMP_0~5#1; [2024-11-09 20:33:50,015 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L342: havoc main_~__tmp_28~0#1, main_~g__x~13#1;havoc main_~__tmp_27~0#1, main_~f__x~13#1, main_~main____CPAchecker_TMP_1~5#1;havoc main_~__tmp_26~0#1, main_~g__x~12#1;havoc main_~__tmp_25~0#1, main_~f__x~12#1;havoc main_~main____CPAchecker_TMP_0~5#1; [2024-11-09 20:33:50,015 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L516: havoc main_~__tmp_44~0#1, main_~g__x~21#1;havoc main_~__tmp_43~0#1, main_~f__x~21#1, main_~main____CPAchecker_TMP_1~9#1;havoc main_~__tmp_42~0#1, main_~g__x~20#1;havoc main_~__tmp_41~0#1, main_~f__x~20#1;havoc main_~main____CPAchecker_TMP_0~9#1; [2024-11-09 20:33:50,015 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L516: havoc main_~__tmp_44~0#1, main_~g__x~21#1;havoc main_~__tmp_43~0#1, main_~f__x~21#1, main_~main____CPAchecker_TMP_1~9#1;havoc main_~__tmp_42~0#1, main_~g__x~20#1;havoc main_~__tmp_41~0#1, main_~f__x~20#1;havoc main_~main____CPAchecker_TMP_0~9#1; [2024-11-09 20:33:50,015 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L516: havoc main_~__tmp_44~0#1, main_~g__x~21#1;havoc main_~__tmp_43~0#1, main_~f__x~21#1, main_~main____CPAchecker_TMP_1~9#1;havoc main_~__tmp_42~0#1, main_~g__x~20#1;havoc main_~__tmp_41~0#1, main_~f__x~20#1;havoc main_~main____CPAchecker_TMP_0~9#1; [2024-11-09 20:33:50,016 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L384: havoc main_~__tmp_32~0#1, main_~g__x~15#1;havoc main_~__tmp_31~0#1, main_~f__x~15#1, main_~main____CPAchecker_TMP_1~6#1;havoc main_~__tmp_30~0#1, main_~g__x~14#1;havoc main_~__tmp_29~0#1, main_~f__x~14#1;havoc main_~main____CPAchecker_TMP_0~6#1; [2024-11-09 20:33:50,016 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L384: havoc main_~__tmp_32~0#1, main_~g__x~15#1;havoc main_~__tmp_31~0#1, main_~f__x~15#1, main_~main____CPAchecker_TMP_1~6#1;havoc main_~__tmp_30~0#1, main_~g__x~14#1;havoc main_~__tmp_29~0#1, main_~f__x~14#1;havoc main_~main____CPAchecker_TMP_0~6#1; [2024-11-09 20:33:50,016 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L384: havoc main_~__tmp_32~0#1, main_~g__x~15#1;havoc main_~__tmp_31~0#1, main_~f__x~15#1, main_~main____CPAchecker_TMP_1~6#1;havoc main_~__tmp_30~0#1, main_~g__x~14#1;havoc main_~__tmp_29~0#1, main_~f__x~14#1;havoc main_~main____CPAchecker_TMP_0~6#1; [2024-11-09 20:33:50,016 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L426: havoc main_~__tmp_36~0#1, main_~g__x~17#1;havoc main_~__tmp_35~0#1, main_~f__x~17#1, main_~main____CPAchecker_TMP_1~7#1;havoc main_~__tmp_34~0#1, main_~g__x~16#1;havoc main_~__tmp_33~0#1, main_~f__x~16#1;havoc main_~main____CPAchecker_TMP_0~7#1; [2024-11-09 20:33:50,016 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L426: havoc main_~__tmp_36~0#1, main_~g__x~17#1;havoc main_~__tmp_35~0#1, main_~f__x~17#1, main_~main____CPAchecker_TMP_1~7#1;havoc main_~__tmp_34~0#1, main_~g__x~16#1;havoc main_~__tmp_33~0#1, main_~f__x~16#1;havoc main_~main____CPAchecker_TMP_0~7#1; [2024-11-09 20:33:50,017 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L426: havoc main_~__tmp_36~0#1, main_~g__x~17#1;havoc main_~__tmp_35~0#1, main_~f__x~17#1, main_~main____CPAchecker_TMP_1~7#1;havoc main_~__tmp_34~0#1, main_~g__x~16#1;havoc main_~__tmp_33~0#1, main_~f__x~16#1;havoc main_~main____CPAchecker_TMP_0~7#1; [2024-11-09 20:33:50,017 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L468: havoc main_~__tmp_40~0#1, main_~g__x~19#1;havoc main_~__tmp_39~0#1, main_~f__x~19#1, main_~main____CPAchecker_TMP_1~8#1;havoc main_~__tmp_38~0#1, main_~g__x~18#1;havoc main_~__tmp_37~0#1, main_~f__x~18#1;havoc main_~main____CPAchecker_TMP_0~8#1; [2024-11-09 20:33:50,017 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L468: havoc main_~__tmp_40~0#1, main_~g__x~19#1;havoc main_~__tmp_39~0#1, main_~f__x~19#1, main_~main____CPAchecker_TMP_1~8#1;havoc main_~__tmp_38~0#1, main_~g__x~18#1;havoc main_~__tmp_37~0#1, main_~f__x~18#1;havoc main_~main____CPAchecker_TMP_0~8#1; [2024-11-09 20:33:50,017 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L468: havoc main_~__tmp_40~0#1, main_~g__x~19#1;havoc main_~__tmp_39~0#1, main_~f__x~19#1, main_~main____CPAchecker_TMP_1~8#1;havoc main_~__tmp_38~0#1, main_~g__x~18#1;havoc main_~__tmp_37~0#1, main_~f__x~18#1;havoc main_~main____CPAchecker_TMP_0~8#1; [2024-11-09 20:33:50,017 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L560: havoc main_~__tmp_45~0#1, main_~__VERIFIER_assert__cond~0#1;havoc main_~main____CPAchecker_TMP_2~0#1; [2024-11-09 20:33:50,017 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L560: havoc main_~__tmp_45~0#1, main_~__VERIFIER_assert__cond~0#1;havoc main_~main____CPAchecker_TMP_2~0#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L132: havoc main_~__tmp_8~0#1, main_~g__x~3#1;havoc main_~__tmp_7~0#1, main_~f__x~3#1, main_~main____CPAchecker_TMP_1~0#1;havoc main_~__tmp_6~0#1, main_~g__x~2#1;havoc main_~__tmp_5~0#1, main_~f__x~2#1;havoc main_~main____CPAchecker_TMP_0~0#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L132: havoc main_~__tmp_8~0#1, main_~g__x~3#1;havoc main_~__tmp_7~0#1, main_~f__x~3#1, main_~main____CPAchecker_TMP_1~0#1;havoc main_~__tmp_6~0#1, main_~g__x~2#1;havoc main_~__tmp_5~0#1, main_~f__x~2#1;havoc main_~main____CPAchecker_TMP_0~0#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L132: havoc main_~__tmp_8~0#1, main_~g__x~3#1;havoc main_~__tmp_7~0#1, main_~f__x~3#1, main_~main____CPAchecker_TMP_1~0#1;havoc main_~__tmp_6~0#1, main_~g__x~2#1;havoc main_~__tmp_5~0#1, main_~f__x~2#1;havoc main_~main____CPAchecker_TMP_0~0#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L91: havoc main_~__tmp_4~0#1, main_~g__x~1#1;havoc main_~__tmp_3~0#1, main_~f__x~1#1;havoc main_~__tmp_2~0#1, main_~g__x~0#1;havoc main_~__tmp_1~0#1, main_~f__x~0#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L174: havoc main_~__tmp_12~0#1, main_~g__x~5#1;havoc main_~__tmp_11~0#1, main_~f__x~5#1, main_~main____CPAchecker_TMP_1~1#1;havoc main_~__tmp_10~0#1, main_~g__x~4#1;havoc main_~__tmp_9~0#1, main_~f__x~4#1;havoc main_~main____CPAchecker_TMP_0~1#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L174: havoc main_~__tmp_12~0#1, main_~g__x~5#1;havoc main_~__tmp_11~0#1, main_~f__x~5#1, main_~main____CPAchecker_TMP_1~1#1;havoc main_~__tmp_10~0#1, main_~g__x~4#1;havoc main_~__tmp_9~0#1, main_~f__x~4#1;havoc main_~main____CPAchecker_TMP_0~1#1; [2024-11-09 20:33:50,018 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L174: havoc main_~__tmp_12~0#1, main_~g__x~5#1;havoc main_~__tmp_11~0#1, main_~f__x~5#1, main_~main____CPAchecker_TMP_1~1#1;havoc main_~__tmp_10~0#1, main_~g__x~4#1;havoc main_~__tmp_9~0#1, main_~f__x~4#1;havoc main_~main____CPAchecker_TMP_0~1#1; [2024-11-09 20:33:50,019 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L216: havoc main_~__tmp_16~0#1, main_~g__x~7#1;havoc main_~__tmp_15~0#1, main_~f__x~7#1, main_~main____CPAchecker_TMP_1~2#1;havoc main_~__tmp_14~0#1, main_~g__x~6#1;havoc main_~__tmp_13~0#1, main_~f__x~6#1;havoc main_~main____CPAchecker_TMP_0~2#1; [2024-11-09 20:33:50,019 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L216: havoc main_~__tmp_16~0#1, main_~g__x~7#1;havoc main_~__tmp_15~0#1, main_~f__x~7#1, main_~main____CPAchecker_TMP_1~2#1;havoc main_~__tmp_14~0#1, main_~g__x~6#1;havoc main_~__tmp_13~0#1, main_~f__x~6#1;havoc main_~main____CPAchecker_TMP_0~2#1; [2024-11-09 20:33:50,019 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L216: havoc main_~__tmp_16~0#1, main_~g__x~7#1;havoc main_~__tmp_15~0#1, main_~f__x~7#1, main_~main____CPAchecker_TMP_1~2#1;havoc main_~__tmp_14~0#1, main_~g__x~6#1;havoc main_~__tmp_13~0#1, main_~f__x~6#1;havoc main_~main____CPAchecker_TMP_0~2#1; [2024-11-09 20:33:50,019 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L258: havoc main_~__tmp_20~0#1, main_~g__x~9#1;havoc main_~__tmp_19~0#1, main_~f__x~9#1, main_~main____CPAchecker_TMP_1~3#1;havoc main_~__tmp_18~0#1, main_~g__x~8#1;havoc main_~__tmp_17~0#1, main_~f__x~8#1;havoc main_~main____CPAchecker_TMP_0~3#1; [2024-11-09 20:33:50,019 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L258: havoc main_~__tmp_20~0#1, main_~g__x~9#1;havoc main_~__tmp_19~0#1, main_~f__x~9#1, main_~main____CPAchecker_TMP_1~3#1;havoc main_~__tmp_18~0#1, main_~g__x~8#1;havoc main_~__tmp_17~0#1, main_~f__x~8#1;havoc main_~main____CPAchecker_TMP_0~3#1; [2024-11-09 20:33:50,019 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L258: havoc main_~__tmp_20~0#1, main_~g__x~9#1;havoc main_~__tmp_19~0#1, main_~f__x~9#1, main_~main____CPAchecker_TMP_1~3#1;havoc main_~__tmp_18~0#1, main_~g__x~8#1;havoc main_~__tmp_17~0#1, main_~f__x~8#1;havoc main_~main____CPAchecker_TMP_0~3#1; [2024-11-09 20:33:50,049 INFO L? ?]: Removed 179 outVars from TransFormulas that were not future-live. [2024-11-09 20:33:50,049 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 20:33:50,061 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 20:33:50,061 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 20:33:50,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 08:33:50 BoogieIcfgContainer [2024-11-09 20:33:50,062 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 20:33:50,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 20:33:50,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 20:33:50,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 20:33:50,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:33:48" (1/3) ... [2024-11-09 20:33:50,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3103897b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:33:50, skipping insertion in model container [2024-11-09 20:33:50,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:49" (2/3) ... [2024-11-09 20:33:50,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3103897b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:33:50, skipping insertion in model container [2024-11-09 20:33:50,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 08:33:50" (3/3) ... [2024-11-09 20:33:50,073 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2024-11-09 20:33:50,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 20:33:50,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 20:33:50,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 20:33:50,149 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;@3d495629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 20:33:50,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 20:33:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 55 states have internal predecessors, (98), 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 20:33:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 20:33:50,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:33:50,162 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 20:33:50,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:33:50,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:33:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2140534807, now seen corresponding path program 1 times [2024-11-09 20:33:50,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:33:50,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21584625] [2024-11-09 20:33:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:33:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:33:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:33:50,716 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 20:33:50,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:33:50,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21584625] [2024-11-09 20:33:50,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21584625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:33:50,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:33:50,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 20:33:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562182884] [2024-11-09 20:33:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:33:50,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 20:33:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:33:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 20:33:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 20:33:50,747 INFO L87 Difference]: Start difference. First operand has 56 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 55 states have internal predecessors, (98), 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 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 20:33:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:33:50,801 INFO L93 Difference]: Finished difference Result 63 states and 105 transitions. [2024-11-09 20:33:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 20:33:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-09 20:33:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:33:50,811 INFO L225 Difference]: With dead ends: 63 [2024-11-09 20:33:50,811 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 20:33:50,814 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 20:33:50,816 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 20:33:50,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 20:33:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 20:33:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-09 20:33:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 20:33:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-09 20:33:50,846 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 45 [2024-11-09 20:33:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:33:50,847 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-09 20:33:50,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 20:33:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-09 20:33:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 20:33:50,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:33:50,848 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 20:33:50,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 20:33:50,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:33:50,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:33:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2139551704, now seen corresponding path program 1 times [2024-11-09 20:33:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:33:50,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840001380] [2024-11-09 20:33:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:33:50,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:33:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:33:51,224 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 20:33:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:33:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840001380] [2024-11-09 20:33:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840001380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 20:33:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 20:33:51,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 20:33:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9875725] [2024-11-09 20:33:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 20:33:51,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 20:33:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:33:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 20:33:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-09 20:33:51,231 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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 20:33:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:33:51,312 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2024-11-09 20:33:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 20:33:51,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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 20:33:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:33:51,314 INFO L225 Difference]: With dead ends: 66 [2024-11-09 20:33:51,315 INFO L226 Difference]: Without dead ends: 59 [2024-11-09 20:33:51,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-09 20:33:51,317 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 20:33:51,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 146 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 20:33:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-09 20:33:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2024-11-09 20:33:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 20:33:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-09 20:33:51,329 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 45 [2024-11-09 20:33:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:33:51,329 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-09 20:33:51,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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 20:33:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-09 20:33:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 20:33:51,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:33:51,333 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 20:33:51,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 20:33:51,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:33:51,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:33:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1142588985, now seen corresponding path program 1 times [2024-11-09 20:33:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:33:51,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712266836] [2024-11-09 20:33:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:33:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:33:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:33:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:33:51,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712266836] [2024-11-09 20:33:51,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712266836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:33:51,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161523705] [2024-11-09 20:33:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:33:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:33:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:33:51,684 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 20:33:51,685 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 20:33:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:33:51,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 20:33:51,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:33:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:52,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 20:33:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161523705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 20:33:52,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 20:33:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 20:33:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68915720] [2024-11-09 20:33:52,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 20:33:52,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 20:33:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:33:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 20:33:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 20:33:52,302 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 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 20:33:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:33:52,433 INFO L93 Difference]: Finished difference Result 145 states and 184 transitions. [2024-11-09 20:33:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 20:33:52,434 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 20:33:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:33:52,436 INFO L225 Difference]: With dead ends: 145 [2024-11-09 20:33:52,438 INFO L226 Difference]: Without dead ends: 138 [2024-11-09 20:33:52,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 20:33:52,440 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 201 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 20:33:52,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 186 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 20:33:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-09 20:33:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-09 20:33:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 137 states have internal predecessors, (165), 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 20:33:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2024-11-09 20:33:52,461 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 51 [2024-11-09 20:33:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:33:52,462 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2024-11-09 20:33:52,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 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 20:33:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2024-11-09 20:33:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 20:33:52,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:33:52,469 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:52,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 20:33:52,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:33:52,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:33:52,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:33:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 787337147, now seen corresponding path program 2 times [2024-11-09 20:33:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:33:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879142016] [2024-11-09 20:33:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:33:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:33:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:33:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:33:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879142016] [2024-11-09 20:33:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879142016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:33:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477856983] [2024-11-09 20:33:53,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 20:33:53,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:33:53,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:33:53,495 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 20:33:53,498 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 20:33:53,794 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 20:33:53,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 20:33:53,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 20:33:53,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:33:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:53,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 20:33:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:54,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477856983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 20:33:54,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 20:33:54,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 20:33:54,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828409343] [2024-11-09 20:33:54,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 20:33:54,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 20:33:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:33:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 20:33:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 20:33:54,871 INFO L87 Difference]: Start difference. First operand 138 states and 165 transitions. Second operand has 49 states, 49 states have (on average 5.0) internal successors, (245), 49 states have internal predecessors, (245), 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 20:33:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:33:55,117 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2024-11-09 20:33:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 20:33:55,118 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.0) internal successors, (245), 49 states have internal predecessors, (245), 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 123 [2024-11-09 20:33:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:33:55,120 INFO L225 Difference]: With dead ends: 313 [2024-11-09 20:33:55,120 INFO L226 Difference]: Without dead ends: 306 [2024-11-09 20:33:55,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 20:33:55,122 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 483 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 20:33:55,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 363 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 20:33:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-09 20:33:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2024-11-09 20:33:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.2491803278688525) internal successors, (381), 305 states have internal predecessors, (381), 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 20:33:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 381 transitions. [2024-11-09 20:33:55,143 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 381 transitions. Word has length 123 [2024-11-09 20:33:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:33:55,144 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 381 transitions. [2024-11-09 20:33:55,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.0) internal successors, (245), 49 states have internal predecessors, (245), 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 20:33:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 381 transitions. [2024-11-09 20:33:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-09 20:33:55,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:33:55,149 INFO L215 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:55,172 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 20:33:55,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 20:33:55,350 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:33:55,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:33:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1227620445, now seen corresponding path program 3 times [2024-11-09 20:33:55,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:33:55,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727476038] [2024-11-09 20:33:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:33:55,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:33:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:33:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 0 proven. 4070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:57,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:33:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727476038] [2024-11-09 20:33:57,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727476038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:33:57,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882675451] [2024-11-09 20:33:57,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 20:33:57,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:33:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:33:57,741 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 20:33:57,746 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 20:33:58,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2024-11-09 20:33:58,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 20:33:58,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 20:33:58,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:33:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 0 proven. 4070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:33:58,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 20:34:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 0 proven. 4070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:34:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882675451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 20:34:01,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 20:34:01,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-09 20:34:01,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653777148] [2024-11-09 20:34:01,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 20:34:01,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 20:34:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:34:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 20:34:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-09 20:34:01,526 INFO L87 Difference]: Start difference. First operand 306 states and 381 transitions. Second operand has 97 states, 97 states have (on average 5.494845360824742) internal successors, (533), 97 states have internal predecessors, (533), 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 20:34:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:34:02,329 INFO L93 Difference]: Finished difference Result 649 states and 868 transitions. [2024-11-09 20:34:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 20:34:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 5.494845360824742) internal successors, (533), 97 states have internal predecessors, (533), 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 267 [2024-11-09 20:34:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:34:02,332 INFO L225 Difference]: With dead ends: 649 [2024-11-09 20:34:02,333 INFO L226 Difference]: Without dead ends: 642 [2024-11-09 20:34:02,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-09 20:34:02,336 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1145 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 20:34:02,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 733 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 20:34:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-09 20:34:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2024-11-09 20:34:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2683307332293292) internal successors, (813), 641 states have internal predecessors, (813), 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 20:34:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 813 transitions. [2024-11-09 20:34:02,363 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 813 transitions. Word has length 267 [2024-11-09 20:34:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:34:02,364 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 813 transitions. [2024-11-09 20:34:02,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 5.494845360824742) internal successors, (533), 97 states have internal predecessors, (533), 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 20:34:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 813 transitions. [2024-11-09 20:34:02,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-09 20:34:02,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:34:02,373 INFO L215 NwaCegarLoop]: trace histogram [86, 85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:02,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 20:34:02,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:34:02,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:34:02,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:34:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1168535411, now seen corresponding path program 4 times [2024-11-09 20:34:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:34:02,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901287864] [2024-11-09 20:34:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:34:02,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:34:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:34:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21590 backedges. 0 proven. 21590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:34:09,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:34:09,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901287864] [2024-11-09 20:34:09,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901287864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:34:09,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003248578] [2024-11-09 20:34:09,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 20:34:09,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:34:09,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:34:09,887 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 20:34:09,888 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 20:34:10,732 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 20:34:10,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 20:34:10,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 3935 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-09 20:34:10,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:34:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 21590 backedges. 0 proven. 21590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:34:11,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 20:34:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 21590 backedges. 0 proven. 21590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:34:20,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003248578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 20:34:20,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 20:34:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-09 20:34:20,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134073839] [2024-11-09 20:34:20,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 20:34:20,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-09 20:34:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 20:34:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-09 20:34:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-09 20:34:20,306 INFO L87 Difference]: Start difference. First operand 642 states and 813 transitions. Second operand has 193 states, 193 states have (on average 5.746113989637306) internal successors, (1109), 193 states have internal predecessors, (1109), 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 20:34:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 20:34:28,392 INFO L93 Difference]: Finished difference Result 1321 states and 1780 transitions. [2024-11-09 20:34:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-09 20:34:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 5.746113989637306) internal successors, (1109), 193 states have internal predecessors, (1109), 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 555 [2024-11-09 20:34:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 20:34:28,398 INFO L225 Difference]: With dead ends: 1321 [2024-11-09 20:34:28,398 INFO L226 Difference]: Without dead ends: 1314 [2024-11-09 20:34:28,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-09 20:34:28,402 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2383 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 20:34:28,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 1404 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 20:34:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2024-11-09 20:34:28,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2024-11-09 20:34:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.2772277227722773) internal successors, (1677), 1313 states have internal predecessors, (1677), 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 20:34:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1677 transitions. [2024-11-09 20:34:28,423 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1677 transitions. Word has length 555 [2024-11-09 20:34:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 20:34:28,424 INFO L471 AbstractCegarLoop]: Abstraction has 1314 states and 1677 transitions. [2024-11-09 20:34:28,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 5.746113989637306) internal successors, (1109), 193 states have internal predecessors, (1109), 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 20:34:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1677 transitions. [2024-11-09 20:34:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2024-11-09 20:34:28,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 20:34:28,455 INFO L215 NwaCegarLoop]: trace histogram [182, 181, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:28,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 20:34:28,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:34:28,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 20:34:28,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 20:34:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2095288083, now seen corresponding path program 5 times [2024-11-09 20:34:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 20:34:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634829850] [2024-11-09 20:34:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 20:34:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 20:34:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 20:34:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 98102 backedges. 0 proven. 98102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:34:57,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 20:34:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634829850] [2024-11-09 20:34:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634829850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 20:34:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102171490] [2024-11-09 20:34:57,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 20:34:57,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 20:34:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 20:34:57,678 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 20:34:57,680 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 20:35:00,161 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 182 check-sat command(s) [2024-11-09 20:35:00,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 20:35:00,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 7871 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-09 20:35:00,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 20:35:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 98102 backedges. 0 proven. 98102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 20:35:01,232 INFO L311 TraceCheckSpWp]: Computing backward predicates...