./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.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 065397af3cd6d10649fc8ba37687b2a2b7dcb462be78997de981751c3e212e90 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:33:25,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:33:25,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:33:25,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:33:25,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:33:25,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:33:25,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:33:25,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:33:25,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:33:25,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:33:25,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:33:25,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:33:25,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:33:25,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:33:25,644 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:33:25,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:33:25,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:33:25,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:33:25,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:33:25,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:33:25,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:33:25,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:33:25,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:33:25,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:33:25,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:33:25,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:33:25,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:33:25,649 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:33:25,649 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:33:25,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:33:25,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:33:25,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:33:25,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:33:25,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:33:25,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:33:25,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:33:25,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:33:25,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:33:25,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:33:25,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:33:25,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:33:25,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:33:25,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065397af3cd6d10649fc8ba37687b2a2b7dcb462be78997de981751c3e212e90 [2024-11-16 08:33:25,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:33:25,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:33:25,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:33:25,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:33:25,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:33:25,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:33:27,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:33:27,585 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:33:27,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:33:27,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41271f373/cb6c89250cd045fbb2c81d5a99b28e61/FLAG4b6f23ab4 [2024-11-16 08:33:27,611 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41271f373/cb6c89250cd045fbb2c81d5a99b28e61 [2024-11-16 08:33:27,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:33:27,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:33:27,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:33:27,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:33:27,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:33:27,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:33:27" (1/1) ... [2024-11-16 08:33:27,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e0ab35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:27, skipping insertion in model container [2024-11-16 08:33:27,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:33:27" (1/1) ... [2024-11-16 08:33:27,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:33:27,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-16 08:33:27,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:33:27,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:33:28,030 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-16 08:33:28,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:33:28,068 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:33:28,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28 WrapperNode [2024-11-16 08:33:28,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:33:28,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:33:28,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:33:28,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:33:28,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,117 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 471 [2024-11-16 08:33:28,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:33:28,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:33:28,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:33:28,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:33:28,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,161 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]. [2024-11-16 08:33:28,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,172 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:33:28,183 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:33:28,183 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:33:28,183 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:33:28,184 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (1/1) ... [2024-11-16 08:33:28,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:33:28,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:33:28,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 08:33:28,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 08:33:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:33:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:33:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:33:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:33:28,400 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:33:28,402 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:33:28,870 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L349: havoc main_~node4____CPAchecker_TMP_1~0#1; [2024-11-16 08:33:28,871 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L218: havoc main_~node4__m4~0#1; [2024-11-16 08:33:28,871 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L435: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-16 08:33:28,871 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L321: havoc main_~node4____CPAchecker_TMP_0~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L521: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L407: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L608: havoc main_~node1____CPAchecker_TMP_1~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L493: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L163: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L182: havoc main_~node2__m2~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-16 08:33:28,872 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L200: havoc main_~node3__m3~0#1; [2024-11-16 08:33:28,873 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L580: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-16 08:33:28,908 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-16 08:33:28,908 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:33:28,924 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:33:28,925 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:33:28,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:33:28 BoogieIcfgContainer [2024-11-16 08:33:28,926 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:33:28,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:33:28,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:33:28,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:33:28,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:33:27" (1/3) ... [2024-11-16 08:33:28,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ff3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:33:28, skipping insertion in model container [2024-11-16 08:33:28,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:33:28" (2/3) ... [2024-11-16 08:33:28,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4ff3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:33:28, skipping insertion in model container [2024-11-16 08:33:28,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:33:28" (3/3) ... [2024-11-16 08:33:28,938 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:33:28,954 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:33:28,954 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:33:29,018 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:33:29,027 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;@4f2e3618, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:33:29,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:33:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 115 states have (on average 1.6521739130434783) internal successors, (190), 116 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:33:29,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:29,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:29,039 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:29,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:29,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1240010555, now seen corresponding path program 1 times [2024-11-16 08:33:29,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353090417] [2024-11-16 08:33:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:29,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:29,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:29,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353090417] [2024-11-16 08:33:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353090417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:29,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:29,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314878374] [2024-11-16 08:33:29,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:29,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:29,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:29,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:29,485 INFO L87 Difference]: Start difference. First operand has 117 states, 115 states have (on average 1.6521739130434783) internal successors, (190), 116 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:29,562 INFO L93 Difference]: Finished difference Result 278 states and 437 transitions. [2024-11-16 08:33:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:29,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:33:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:29,577 INFO L225 Difference]: With dead ends: 278 [2024-11-16 08:33:29,577 INFO L226 Difference]: Without dead ends: 182 [2024-11-16 08:33:29,580 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 [2024-11-16 08:33:29,587 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 141 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 417 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 [2024-11-16 08:33:29,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 417 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-16 08:33:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-11-16 08:33:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.4748603351955307) internal successors, (264), 179 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2024-11-16 08:33:29,695 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 49 [2024-11-16 08:33:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:29,699 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2024-11-16 08:33:29,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2024-11-16 08:33:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 08:33:29,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:29,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:29,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:33:29,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:29,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash -173413774, now seen corresponding path program 1 times [2024-11-16 08:33:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594925369] [2024-11-16 08:33:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594925369] [2024-11-16 08:33:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594925369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:29,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427933158] [2024-11-16 08:33:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:29,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:29,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:29,917 INFO L87 Difference]: Start difference. First operand 180 states and 264 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:29,960 INFO L93 Difference]: Finished difference Result 452 states and 684 transitions. [2024-11-16 08:33:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:29,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 08:33:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:29,963 INFO L225 Difference]: With dead ends: 452 [2024-11-16 08:33:29,963 INFO L226 Difference]: Without dead ends: 299 [2024-11-16 08:33:29,964 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 [2024-11-16 08:33:29,967 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 114 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 364 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 [2024-11-16 08:33:29,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 364 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-16 08:33:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2024-11-16 08:33:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.5) internal successors, (444), 296 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 444 transitions. [2024-11-16 08:33:29,983 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 444 transitions. Word has length 50 [2024-11-16 08:33:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:29,984 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 444 transitions. [2024-11-16 08:33:29,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 444 transitions. [2024-11-16 08:33:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 08:33:29,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:29,986 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:29,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:33:29,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:29,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1866202188, now seen corresponding path program 1 times [2024-11-16 08:33:29,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:29,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052286091] [2024-11-16 08:33:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:30,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:30,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052286091] [2024-11-16 08:33:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052286091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:30,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:30,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:30,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953483346] [2024-11-16 08:33:30,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:30,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:30,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:30,103 INFO L87 Difference]: Start difference. First operand 297 states and 444 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:30,138 INFO L93 Difference]: Finished difference Result 769 states and 1170 transitions. [2024-11-16 08:33:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 08:33:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:30,144 INFO L225 Difference]: With dead ends: 769 [2024-11-16 08:33:30,145 INFO L226 Difference]: Without dead ends: 499 [2024-11-16 08:33:30,146 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 [2024-11-16 08:33:30,147 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 109 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 349 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 [2024-11-16 08:33:30,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 349 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-16 08:33:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2024-11-16 08:33:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.5080645161290323) internal successors, (748), 496 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 748 transitions. [2024-11-16 08:33:30,175 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 748 transitions. Word has length 51 [2024-11-16 08:33:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:30,176 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 748 transitions. [2024-11-16 08:33:30,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 748 transitions. [2024-11-16 08:33:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 08:33:30,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:30,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:30,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:33:30,178 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:30,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1405266741, now seen corresponding path program 1 times [2024-11-16 08:33:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:30,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147257741] [2024-11-16 08:33:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:30,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147257741] [2024-11-16 08:33:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147257741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:30,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:30,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:30,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834109076] [2024-11-16 08:33:30,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:30,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:30,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:30,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:30,267 INFO L87 Difference]: Start difference. First operand 497 states and 748 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:30,296 INFO L93 Difference]: Finished difference Result 1301 states and 1974 transitions. [2024-11-16 08:33:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:30,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 08:33:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:30,299 INFO L225 Difference]: With dead ends: 1301 [2024-11-16 08:33:30,301 INFO L226 Difference]: Without dead ends: 831 [2024-11-16 08:33:30,302 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 [2024-11-16 08:33:30,306 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 104 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 334 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 [2024-11-16 08:33:30,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-16 08:33:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2024-11-16 08:33:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 1.502415458937198) internal successors, (1244), 828 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1244 transitions. [2024-11-16 08:33:30,338 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1244 transitions. Word has length 52 [2024-11-16 08:33:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:30,338 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1244 transitions. [2024-11-16 08:33:30,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1244 transitions. [2024-11-16 08:33:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 08:33:30,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:30,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:30,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:33:30,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:30,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1587716819, now seen corresponding path program 1 times [2024-11-16 08:33:30,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042104946] [2024-11-16 08:33:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:30,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:30,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042104946] [2024-11-16 08:33:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042104946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:33:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966175724] [2024-11-16 08:33:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:30,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:33:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:30,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:33:30,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:30,510 INFO L87 Difference]: Start difference. First operand 829 states and 1244 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:30,657 INFO L93 Difference]: Finished difference Result 4839 states and 7329 transitions. [2024-11-16 08:33:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:33:30,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-16 08:33:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:30,674 INFO L225 Difference]: With dead ends: 4839 [2024-11-16 08:33:30,674 INFO L226 Difference]: Without dead ends: 4037 [2024-11-16 08:33:30,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:33:30,681 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 948 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:30,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1390 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:33:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2024-11-16 08:33:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 1629. [2024-11-16 08:33:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1628 states have (on average 1.4914004914004915) internal successors, (2428), 1628 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2428 transitions. [2024-11-16 08:33:30,736 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2428 transitions. Word has length 53 [2024-11-16 08:33:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:30,737 INFO L471 AbstractCegarLoop]: Abstraction has 1629 states and 2428 transitions. [2024-11-16 08:33:30,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2428 transitions. [2024-11-16 08:33:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 08:33:30,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:30,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:30,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:33:30,739 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:30,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1051901171, now seen corresponding path program 1 times [2024-11-16 08:33:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:30,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897500857] [2024-11-16 08:33:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897500857] [2024-11-16 08:33:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897500857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:30,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:30,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:33:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986007991] [2024-11-16 08:33:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:30,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:33:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:33:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:30,957 INFO L87 Difference]: Start difference. First operand 1629 states and 2428 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2024-11-16 08:33:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:31,071 INFO L93 Difference]: Finished difference Result 7045 states and 10464 transitions. [2024-11-16 08:33:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:33:31,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 08:33:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:31,093 INFO L225 Difference]: With dead ends: 7045 [2024-11-16 08:33:31,093 INFO L226 Difference]: Without dead ends: 5443 [2024-11-16 08:33:31,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:31,100 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 498 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:31,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 538 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:33:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2024-11-16 08:33:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 5437. [2024-11-16 08:33:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 1.4768211920529801) internal successors, (8028), 5436 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8028 transitions. [2024-11-16 08:33:31,210 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8028 transitions. Word has length 55 [2024-11-16 08:33:31,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:31,210 INFO L471 AbstractCegarLoop]: Abstraction has 5437 states and 8028 transitions. [2024-11-16 08:33:31,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2024-11-16 08:33:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8028 transitions. [2024-11-16 08:33:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:33:31,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:31,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:31,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:33:31,217 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:31,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1516150101, now seen corresponding path program 1 times [2024-11-16 08:33:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524574032] [2024-11-16 08:33:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:31,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:31,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524574032] [2024-11-16 08:33:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524574032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:31,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:31,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:33:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561363930] [2024-11-16 08:33:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:31,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:33:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:33:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:33:31,618 INFO L87 Difference]: Start difference. First operand 5437 states and 8028 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-11-16 08:33:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:31,663 INFO L93 Difference]: Finished difference Result 5823 states and 8541 transitions. [2024-11-16 08:33:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:33:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 08:33:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:31,681 INFO L225 Difference]: With dead ends: 5823 [2024-11-16 08:33:31,682 INFO L226 Difference]: Without dead ends: 5821 [2024-11-16 08:33:31,684 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 [2024-11-16 08:33:31,686 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:31,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2024-11-16 08:33:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5821. [2024-11-16 08:33:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5821 states, 5820 states have (on average 1.445360824742268) internal successors, (8412), 5820 states have internal predecessors, (8412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5821 states to 5821 states and 8412 transitions. [2024-11-16 08:33:31,801 INFO L78 Accepts]: Start accepts. Automaton has 5821 states and 8412 transitions. Word has length 57 [2024-11-16 08:33:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:31,802 INFO L471 AbstractCegarLoop]: Abstraction has 5821 states and 8412 transitions. [2024-11-16 08:33:31,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-11-16 08:33:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5821 states and 8412 transitions. [2024-11-16 08:33:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 08:33:31,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:31,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:31,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:33:31,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:31,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 391782333, now seen corresponding path program 1 times [2024-11-16 08:33:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:31,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215035130] [2024-11-16 08:33:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:31,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:31,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215035130] [2024-11-16 08:33:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215035130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:31,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:31,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900002041] [2024-11-16 08:33:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:31,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:31,900 INFO L87 Difference]: Start difference. First operand 5821 states and 8412 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:31,961 INFO L93 Difference]: Finished difference Result 14140 states and 20485 transitions. [2024-11-16 08:33:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-16 08:33:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:31,989 INFO L225 Difference]: With dead ends: 14140 [2024-11-16 08:33:31,989 INFO L226 Difference]: Without dead ends: 8346 [2024-11-16 08:33:31,998 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 [2024-11-16 08:33:31,999 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 94 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:31,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 324 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8346 states. [2024-11-16 08:33:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8346 to 8344. [2024-11-16 08:33:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8344 states, 8343 states have (on average 1.4434855567541651) internal successors, (12043), 8343 states have internal predecessors, (12043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8344 states to 8344 states and 12043 transitions. [2024-11-16 08:33:32,145 INFO L78 Accepts]: Start accepts. Automaton has 8344 states and 12043 transitions. Word has length 58 [2024-11-16 08:33:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:32,145 INFO L471 AbstractCegarLoop]: Abstraction has 8344 states and 12043 transitions. [2024-11-16 08:33:32,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8344 states and 12043 transitions. [2024-11-16 08:33:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:33:32,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:32,150 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:32,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:33:32,150 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:32,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash 671904161, now seen corresponding path program 1 times [2024-11-16 08:33:32,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:32,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348825518] [2024-11-16 08:33:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:33:32,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:32,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348825518] [2024-11-16 08:33:32,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348825518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:33:32,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71487070] [2024-11-16 08:33:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:32,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:33:32,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:33:32,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:33:32,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:33:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:32,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 08:33:32,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:33:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:33,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:33:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71487070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:33:34,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:33:34,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 15 [2024-11-16 08:33:34,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727733748] [2024-11-16 08:33:34,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:33:34,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 08:33:34,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 08:33:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:33:34,092 INFO L87 Difference]: Start difference. First operand 8344 states and 12043 transitions. Second operand has 15 states, 15 states have (on average 15.2) internal successors, (228), 15 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:34,882 INFO L93 Difference]: Finished difference Result 32868 states and 47424 transitions. [2024-11-16 08:33:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 08:33:34,883 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.2) internal successors, (228), 15 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:33:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:34,936 INFO L225 Difference]: With dead ends: 32868 [2024-11-16 08:33:34,936 INFO L226 Difference]: Without dead ends: 24554 [2024-11-16 08:33:34,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2024-11-16 08:33:34,958 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 3218 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3218 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:34,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3218 Valid, 2080 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:33:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24554 states. [2024-11-16 08:33:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24554 to 24530. [2024-11-16 08:33:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24530 states, 24529 states have (on average 1.4296139263728647) internal successors, (35067), 24529 states have internal predecessors, (35067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24530 states to 24530 states and 35067 transitions. [2024-11-16 08:33:35,462 INFO L78 Accepts]: Start accepts. Automaton has 24530 states and 35067 transitions. Word has length 81 [2024-11-16 08:33:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:35,463 INFO L471 AbstractCegarLoop]: Abstraction has 24530 states and 35067 transitions. [2024-11-16 08:33:35,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.2) internal successors, (228), 15 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 24530 states and 35067 transitions. [2024-11-16 08:33:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:35,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:35,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:35,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 08:33:35,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:33:35,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:35,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1574448672, now seen corresponding path program 1 times [2024-11-16 08:33:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647982758] [2024-11-16 08:33:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:35,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647982758] [2024-11-16 08:33:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647982758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318815525] [2024-11-16 08:33:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:35,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:35,735 INFO L87 Difference]: Start difference. First operand 24530 states and 35067 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:35,887 INFO L93 Difference]: Finished difference Result 55962 states and 79862 transitions. [2024-11-16 08:33:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:35,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:35,965 INFO L225 Difference]: With dead ends: 55962 [2024-11-16 08:33:35,965 INFO L226 Difference]: Without dead ends: 35926 [2024-11-16 08:33:36,113 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 [2024-11-16 08:33:36,122 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 90 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 307 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 [2024-11-16 08:33:36,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 307 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35926 states. [2024-11-16 08:33:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35926 to 35924. [2024-11-16 08:33:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35924 states, 35923 states have (on average 1.4147203741335634) internal successors, (50821), 35923 states have internal predecessors, (50821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35924 states to 35924 states and 50821 transitions. [2024-11-16 08:33:36,797 INFO L78 Accepts]: Start accepts. Automaton has 35924 states and 50821 transitions. Word has length 82 [2024-11-16 08:33:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:36,797 INFO L471 AbstractCegarLoop]: Abstraction has 35924 states and 50821 transitions. [2024-11-16 08:33:36,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 35924 states and 50821 transitions. [2024-11-16 08:33:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:36,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:36,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:36,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:33:36,806 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:36,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1361867936, now seen corresponding path program 1 times [2024-11-16 08:33:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977078712] [2024-11-16 08:33:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977078712] [2024-11-16 08:33:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977078712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:36,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:36,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503284335] [2024-11-16 08:33:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:36,883 INFO L87 Difference]: Start difference. First operand 35924 states and 50821 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:37,337 INFO L93 Difference]: Finished difference Result 89300 states and 125835 transitions. [2024-11-16 08:33:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:37,453 INFO L225 Difference]: With dead ends: 89300 [2024-11-16 08:33:37,453 INFO L226 Difference]: Without dead ends: 58041 [2024-11-16 08:33:37,499 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 [2024-11-16 08:33:37,499 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 91 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 326 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 [2024-11-16 08:33:37,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 326 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58041 states. [2024-11-16 08:33:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58041 to 56661. [2024-11-16 08:33:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56661 states, 56660 states have (on average 1.3966290151782563) internal successors, (79133), 56660 states have internal predecessors, (79133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56661 states to 56661 states and 79133 transitions. [2024-11-16 08:33:38,438 INFO L78 Accepts]: Start accepts. Automaton has 56661 states and 79133 transitions. Word has length 82 [2024-11-16 08:33:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:38,438 INFO L471 AbstractCegarLoop]: Abstraction has 56661 states and 79133 transitions. [2024-11-16 08:33:38,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 56661 states and 79133 transitions. [2024-11-16 08:33:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:38,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:38,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:38,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:33:38,446 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:38,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1687128224, now seen corresponding path program 1 times [2024-11-16 08:33:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161013794] [2024-11-16 08:33:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:38,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161013794] [2024-11-16 08:33:38,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161013794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:38,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:38,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292467830] [2024-11-16 08:33:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:38,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:38,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:38,748 INFO L87 Difference]: Start difference. First operand 56661 states and 79133 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:39,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:39,222 INFO L93 Difference]: Finished difference Result 127104 states and 176304 transitions. [2024-11-16 08:33:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:33:39,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:39,358 INFO L225 Difference]: With dead ends: 127104 [2024-11-16 08:33:39,358 INFO L226 Difference]: Without dead ends: 84443 [2024-11-16 08:33:39,415 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 [2024-11-16 08:33:39,416 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 355 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 [2024-11-16 08:33:39,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 355 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:33:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84443 states. [2024-11-16 08:33:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84443 to 81819. [2024-11-16 08:33:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81819 states, 81818 states have (on average 1.3741719426043169) internal successors, (112432), 81818 states have internal predecessors, (112432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81819 states to 81819 states and 112432 transitions. [2024-11-16 08:33:40,747 INFO L78 Accepts]: Start accepts. Automaton has 81819 states and 112432 transitions. Word has length 82 [2024-11-16 08:33:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:40,747 INFO L471 AbstractCegarLoop]: Abstraction has 81819 states and 112432 transitions. [2024-11-16 08:33:40,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 81819 states and 112432 transitions. [2024-11-16 08:33:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:40,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:40,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:40,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:33:40,756 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:40,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -945563104, now seen corresponding path program 1 times [2024-11-16 08:33:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640620455] [2024-11-16 08:33:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:33:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640620455] [2024-11-16 08:33:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640620455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:40,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:33:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054844158] [2024-11-16 08:33:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:40,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:33:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:33:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:40,918 INFO L87 Difference]: Start difference. First operand 81819 states and 112432 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:41,822 INFO L93 Difference]: Finished difference Result 198782 states and 274529 transitions. [2024-11-16 08:33:41,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:33:41,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:42,119 INFO L225 Difference]: With dead ends: 198782 [2024-11-16 08:33:42,120 INFO L226 Difference]: Without dead ends: 174684 [2024-11-16 08:33:42,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:33:42,168 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 838 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:42,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 945 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:33:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174684 states. [2024-11-16 08:33:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174684 to 105222. [2024-11-16 08:33:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105222 states, 105221 states have (on average 1.3680253941703653) internal successors, (143945), 105221 states have internal predecessors, (143945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105222 states to 105222 states and 143945 transitions. [2024-11-16 08:33:43,885 INFO L78 Accepts]: Start accepts. Automaton has 105222 states and 143945 transitions. Word has length 82 [2024-11-16 08:33:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:43,886 INFO L471 AbstractCegarLoop]: Abstraction has 105222 states and 143945 transitions. [2024-11-16 08:33:43,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 105222 states and 143945 transitions. [2024-11-16 08:33:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:43,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:43,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:43,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:33:43,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:43,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash 789032380, now seen corresponding path program 1 times [2024-11-16 08:33:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514566923] [2024-11-16 08:33:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:33:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514566923] [2024-11-16 08:33:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514566923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:44,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:33:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120037482] [2024-11-16 08:33:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:44,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:33:44,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:33:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:44,408 INFO L87 Difference]: Start difference. First operand 105222 states and 143945 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:45,319 INFO L93 Difference]: Finished difference Result 229814 states and 316877 transitions. [2024-11-16 08:33:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:33:45,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:45,610 INFO L225 Difference]: With dead ends: 229814 [2024-11-16 08:33:45,610 INFO L226 Difference]: Without dead ends: 197700 [2024-11-16 08:33:45,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:33:45,693 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 765 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1020 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 [2024-11-16 08:33:45,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1020 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:33:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197700 states. [2024-11-16 08:33:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197700 to 136559. [2024-11-16 08:33:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136559 states, 136558 states have (on average 1.3657859664025542) internal successors, (186509), 136558 states have internal predecessors, (186509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136559 states to 136559 states and 186509 transitions. [2024-11-16 08:33:48,124 INFO L78 Accepts]: Start accepts. Automaton has 136559 states and 186509 transitions. Word has length 82 [2024-11-16 08:33:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:48,124 INFO L471 AbstractCegarLoop]: Abstraction has 136559 states and 186509 transitions. [2024-11-16 08:33:48,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 136559 states and 186509 transitions. [2024-11-16 08:33:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:48,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:48,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:48,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:33:48,132 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:48,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1170469344, now seen corresponding path program 1 times [2024-11-16 08:33:48,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:48,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990696620] [2024-11-16 08:33:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:33:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990696620] [2024-11-16 08:33:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990696620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:48,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:48,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:33:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640353054] [2024-11-16 08:33:48,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:48,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:33:48,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:33:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:48,702 INFO L87 Difference]: Start difference. First operand 136559 states and 186509 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:49,442 INFO L93 Difference]: Finished difference Result 265704 states and 365875 transitions. [2024-11-16 08:33:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:33:49,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:49,734 INFO L225 Difference]: With dead ends: 265704 [2024-11-16 08:33:49,734 INFO L226 Difference]: Without dead ends: 228750 [2024-11-16 08:33:49,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:33:49,821 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 825 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:49,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1073 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:33:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228750 states. [2024-11-16 08:33:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228750 to 167028. [2024-11-16 08:33:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167028 states, 167027 states have (on average 1.3665155932873128) internal successors, (228245), 167027 states have internal predecessors, (228245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167028 states to 167028 states and 228245 transitions. [2024-11-16 08:33:53,660 INFO L78 Accepts]: Start accepts. Automaton has 167028 states and 228245 transitions. Word has length 82 [2024-11-16 08:33:53,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:53,660 INFO L471 AbstractCegarLoop]: Abstraction has 167028 states and 228245 transitions. [2024-11-16 08:33:53,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 167028 states and 228245 transitions. [2024-11-16 08:33:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:33:53,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:53,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:53,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:33:53,679 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:53,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 234053308, now seen corresponding path program 1 times [2024-11-16 08:33:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89055431] [2024-11-16 08:33:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:53,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:33:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89055431] [2024-11-16 08:33:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89055431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:53,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:33:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499588429] [2024-11-16 08:33:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:53,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:33:53,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:33:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:33:53,841 INFO L87 Difference]: Start difference. First operand 167028 states and 228245 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:33:54,517 INFO L93 Difference]: Finished difference Result 304821 states and 419138 transitions. [2024-11-16 08:33:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:33:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:33:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:33:54,883 INFO L225 Difference]: With dead ends: 304821 [2024-11-16 08:33:54,883 INFO L226 Difference]: Without dead ends: 264969 [2024-11-16 08:33:55,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:33:55,691 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 823 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:33:55,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 959 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:33:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264969 states. [2024-11-16 08:33:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264969 to 193319. [2024-11-16 08:33:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193319 states, 193318 states have (on average 1.3662876710911556) internal successors, (264128), 193318 states have internal predecessors, (264128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193319 states to 193319 states and 264128 transitions. [2024-11-16 08:33:58,892 INFO L78 Accepts]: Start accepts. Automaton has 193319 states and 264128 transitions. Word has length 82 [2024-11-16 08:33:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:33:58,893 INFO L471 AbstractCegarLoop]: Abstraction has 193319 states and 264128 transitions. [2024-11-16 08:33:58,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:33:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 193319 states and 264128 transitions. [2024-11-16 08:33:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 08:33:58,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:33:58,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:33:58,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:33:58,902 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:33:58,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:33:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1172131723, now seen corresponding path program 1 times [2024-11-16 08:33:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:33:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119262202] [2024-11-16 08:33:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:33:58,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:33:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:33:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:33:58,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:33:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119262202] [2024-11-16 08:33:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119262202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:33:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:33:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:33:58,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78222993] [2024-11-16 08:33:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:33:58,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:33:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:33:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:33:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:33:58,962 INFO L87 Difference]: Start difference. First operand 193319 states and 264128 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:00,583 INFO L93 Difference]: Finished difference Result 333539 states and 453210 transitions. [2024-11-16 08:34:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-16 08:34:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:00,842 INFO L225 Difference]: With dead ends: 333539 [2024-11-16 08:34:00,842 INFO L226 Difference]: Without dead ends: 187269 [2024-11-16 08:34:00,914 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 [2024-11-16 08:34:00,915 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 91 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:00,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 393 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187269 states. [2024-11-16 08:34:03,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187269 to 170567. [2024-11-16 08:34:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170567 states, 170566 states have (on average 1.3511368033488502) internal successors, (230458), 170566 states have internal predecessors, (230458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170567 states to 170567 states and 230458 transitions. [2024-11-16 08:34:03,723 INFO L78 Accepts]: Start accepts. Automaton has 170567 states and 230458 transitions. Word has length 86 [2024-11-16 08:34:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:03,724 INFO L471 AbstractCegarLoop]: Abstraction has 170567 states and 230458 transitions. [2024-11-16 08:34:03,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 170567 states and 230458 transitions. [2024-11-16 08:34:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:34:03,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:03,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:34:03,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:34:03,735 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:03,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash 474576407, now seen corresponding path program 1 times [2024-11-16 08:34:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193885244] [2024-11-16 08:34:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:03,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193885244] [2024-11-16 08:34:03,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193885244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931252916] [2024-11-16 08:34:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:03,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:03,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:03,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:34:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:04,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:04,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:04,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931252916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:04,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:04,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029713274] [2024-11-16 08:34:04,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:04,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:04,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:04,444 INFO L87 Difference]: Start difference. First operand 170567 states and 230458 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:06,457 INFO L93 Difference]: Finished difference Result 413961 states and 563455 transitions. [2024-11-16 08:34:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:34:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 88 [2024-11-16 08:34:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:06,808 INFO L225 Difference]: With dead ends: 413961 [2024-11-16 08:34:06,808 INFO L226 Difference]: Without dead ends: 266749 [2024-11-16 08:34:06,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:34:06,885 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1494 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:06,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 485 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:34:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266749 states. [2024-11-16 08:34:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266749 to 192339. [2024-11-16 08:34:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192339 states, 192338 states have (on average 1.3542825650677452) internal successors, (260480), 192338 states have internal predecessors, (260480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192339 states to 192339 states and 260480 transitions. [2024-11-16 08:34:09,912 INFO L78 Accepts]: Start accepts. Automaton has 192339 states and 260480 transitions. Word has length 88 [2024-11-16 08:34:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:09,912 INFO L471 AbstractCegarLoop]: Abstraction has 192339 states and 260480 transitions. [2024-11-16 08:34:09,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 192339 states and 260480 transitions. [2024-11-16 08:34:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:34:09,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:09,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:34:09,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:34:10,122 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,SelfDestructingSolverStorable17 [2024-11-16 08:34:10,122 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:10,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1039709317, now seen corresponding path program 1 times [2024-11-16 08:34:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060795777] [2024-11-16 08:34:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:10,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060795777] [2024-11-16 08:34:10,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060795777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830387216] [2024-11-16 08:34:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:10,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:10,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:10,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:34:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:10,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:10,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:10,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830387216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:10,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972177511] [2024-11-16 08:34:10,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:10,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:10,741 INFO L87 Difference]: Start difference. First operand 192339 states and 260480 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:13,078 INFO L93 Difference]: Finished difference Result 516045 states and 704849 transitions. [2024-11-16 08:34:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:34:13,079 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 88 [2024-11-16 08:34:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:13,559 INFO L225 Difference]: With dead ends: 516045 [2024-11-16 08:34:13,559 INFO L226 Difference]: Without dead ends: 333599 [2024-11-16 08:34:14,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:34:14,678 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1266 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:14,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 456 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:34:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333599 states. [2024-11-16 08:34:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333599 to 216690. [2024-11-16 08:34:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216690 states, 216689 states have (on average 1.357586218035987) internal successors, (294174), 216689 states have internal predecessors, (294174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216690 states to 216690 states and 294174 transitions. [2024-11-16 08:34:18,038 INFO L78 Accepts]: Start accepts. Automaton has 216690 states and 294174 transitions. Word has length 88 [2024-11-16 08:34:18,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:18,039 INFO L471 AbstractCegarLoop]: Abstraction has 216690 states and 294174 transitions. [2024-11-16 08:34:18,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:18,039 INFO L276 IsEmpty]: Start isEmpty. Operand 216690 states and 294174 transitions. [2024-11-16 08:34:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:34:18,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:18,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:34:18,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 08:34:18,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:18,248 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:18,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1761016041, now seen corresponding path program 1 times [2024-11-16 08:34:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:18,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239865390] [2024-11-16 08:34:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239865390] [2024-11-16 08:34:18,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239865390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:18,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029046674] [2024-11-16 08:34:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:18,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:18,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:18,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:34:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:18,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:18,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:18,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029046674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:18,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:18,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32085635] [2024-11-16 08:34:18,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:18,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:18,945 INFO L87 Difference]: Start difference. First operand 216690 states and 294174 transitions. Second operand has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)