/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:36:43,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:36:43,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:36:43,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:36:43,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:36:43,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:36:43,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:36:43,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:36:43,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:36:43,683 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:36:43,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:36:43,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:36:43,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:36:43,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:36:43,685 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:36:43,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:36:43,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:36:43,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:36:43,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:36:43,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:36:43,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:36:43,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:36:43,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:36:43,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:36:43,687 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:36:43,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:36:43,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:36:43,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:36:43,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:36:43,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:36:43,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:36:43,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:36:43,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:36:43,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:36:43,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:36:43,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:36:43,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:36:43,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:36:43,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:36:43,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:36:43,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:36:43,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:36:43,909 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:36:43,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i [2023-12-15 21:36:44,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:36:45,037 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:36:45,038 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i [2023-12-15 21:36:45,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a964e1f07/dd0b925035cc41c8b8912644285371c9/FLAG8709f73e9 [2023-12-15 21:36:45,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a964e1f07/dd0b925035cc41c8b8912644285371c9 [2023-12-15 21:36:45,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:36:45,060 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:36:45,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:36:45,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:36:45,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:36:45,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5115d81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45, skipping insertion in model container [2023-12-15 21:36:45,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:36:45,202 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i[916,929] [2023-12-15 21:36:45,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:36:45,244 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:36:45,252 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i[916,929] [2023-12-15 21:36:45,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:36:45,287 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:36:45,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45 WrapperNode [2023-12-15 21:36:45,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:36:45,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:36:45,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:36:45,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:36:45,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,326 INFO L138 Inliner]: procedures = 26, calls = 163, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 461 [2023-12-15 21:36:45,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:36:45,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:36:45,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:36:45,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:36:45,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,367 INFO L175 MemorySlicer]: Split 123 memory accesses to 13 slices as follows [2, 9, 6, 18, 18, 12, 7, 10, 6, 10, 7, 7, 11]. 15 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 16 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1]. [2023-12-15 21:36:45,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:36:45,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:36:45,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:36:45,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:36:45,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (1/1) ... [2023-12-15 21:36:45,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:36:45,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:45,433 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) [2023-12-15 21:36:45,448 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 [2023-12-15 21:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:36:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:36:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-15 21:36:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:36:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:36:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:36:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-15 21:36:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:36:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:36:45,586 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:36:45,587 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:36:45,879 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:36:45,924 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:36:45,924 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:36:45,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:36:45 BoogieIcfgContainer [2023-12-15 21:36:45,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:36:45,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:36:45,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:36:45,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:36:45,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:36:45" (1/3) ... [2023-12-15 21:36:45,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f2102e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:36:45, skipping insertion in model container [2023-12-15 21:36:45,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:36:45" (2/3) ... [2023-12-15 21:36:45,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f2102e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:36:45, skipping insertion in model container [2023-12-15 21:36:45,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:36:45" (3/3) ... [2023-12-15 21:36:45,930 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-27.i [2023-12-15 21:36:45,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:36:45,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:36:45,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:36:45,991 INFO L357 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, mHoare=true, 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;@7524882f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:36:45,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:36:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:36:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:36:46,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:46,007 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:46,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:46,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1954445179, now seen corresponding path program 1 times [2023-12-15 21:36:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:46,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292405198] [2023-12-15 21:36:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:46,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:46,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292405198] [2023-12-15 21:36:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292405198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:46,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:46,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:36:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655391774] [2023-12-15 21:36:46,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:36:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:46,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:36:46,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:36:46,334 INFO L87 Difference]: Start difference. First operand has 87 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:36:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:46,368 INFO L93 Difference]: Finished difference Result 171 states and 273 transitions. [2023-12-15 21:36:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:36:46,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-15 21:36:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:46,378 INFO L225 Difference]: With dead ends: 171 [2023-12-15 21:36:46,378 INFO L226 Difference]: Without dead ends: 85 [2023-12-15 21:36:46,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:36:46,383 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:46,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:36:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-15 21:36:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-15 21:36:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 66 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:36:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2023-12-15 21:36:46,417 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 126 [2023-12-15 21:36:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:46,417 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2023-12-15 21:36:46,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:36:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2023-12-15 21:36:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:36:46,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:46,420 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:36:46,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2107448995, now seen corresponding path program 1 times [2023-12-15 21:36:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166199650] [2023-12-15 21:36:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166199650] [2023-12-15 21:36:46,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166199650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:46,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:46,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119573962] [2023-12-15 21:36:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:46,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:46,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:46,903 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:47,034 INFO L93 Difference]: Finished difference Result 234 states and 341 transitions. [2023-12-15 21:36:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:36:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2023-12-15 21:36:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:47,041 INFO L225 Difference]: With dead ends: 234 [2023-12-15 21:36:47,041 INFO L226 Difference]: Without dead ends: 150 [2023-12-15 21:36:47,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:47,042 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 165 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 328 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 [2023-12-15 21:36:47,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 328 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-15 21:36:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2023-12-15 21:36:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 120 states have internal predecessors, (165), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-15 21:36:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2023-12-15 21:36:47,061 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 126 [2023-12-15 21:36:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:47,061 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2023-12-15 21:36:47,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2023-12-15 21:36:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:36:47,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:47,063 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:47,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:36:47,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:47,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 113304289, now seen corresponding path program 1 times [2023-12-15 21:36:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470234480] [2023-12-15 21:36:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:47,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470234480] [2023-12-15 21:36:47,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470234480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:47,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:47,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:36:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845230334] [2023-12-15 21:36:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:36:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:36:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:47,792 INFO L87 Difference]: Start difference. First operand 147 states and 215 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:36:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:48,115 INFO L93 Difference]: Finished difference Result 419 states and 612 transitions. [2023-12-15 21:36:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:36:48,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-15 21:36:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:48,125 INFO L225 Difference]: With dead ends: 419 [2023-12-15 21:36:48,125 INFO L226 Difference]: Without dead ends: 273 [2023-12-15 21:36:48,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:36:48,130 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 277 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:48,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 492 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:36:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-15 21:36:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 231. [2023-12-15 21:36:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 197 states have (on average 1.4060913705583757) internal successors, (277), 200 states have internal predecessors, (277), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 21:36:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 335 transitions. [2023-12-15 21:36:48,157 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 335 transitions. Word has length 126 [2023-12-15 21:36:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:48,157 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 335 transitions. [2023-12-15 21:36:48,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:36:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 335 transitions. [2023-12-15 21:36:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:36:48,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:48,159 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:36:48,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:48,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2121224922, now seen corresponding path program 1 times [2023-12-15 21:36:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950002444] [2023-12-15 21:36:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:48,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950002444] [2023-12-15 21:36:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950002444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110615748] [2023-12-15 21:36:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:48,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:48,296 INFO L87 Difference]: Start difference. First operand 231 states and 335 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:48,424 INFO L93 Difference]: Finished difference Result 565 states and 819 transitions. [2023-12-15 21:36:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:36:48,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-15 21:36:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:48,428 INFO L225 Difference]: With dead ends: 565 [2023-12-15 21:36:48,428 INFO L226 Difference]: Without dead ends: 335 [2023-12-15 21:36:48,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:48,436 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 167 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:48,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 652 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-15 21:36:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2023-12-15 21:36:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 230 states have (on average 1.3478260869565217) internal successors, (310), 232 states have internal predecessors, (310), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 21:36:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 410 transitions. [2023-12-15 21:36:48,471 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 410 transitions. Word has length 128 [2023-12-15 21:36:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:48,471 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 410 transitions. [2023-12-15 21:36:48,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 410 transitions. [2023-12-15 21:36:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:36:48,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:48,473 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:48,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 21:36:48,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:48,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1597776678, now seen corresponding path program 1 times [2023-12-15 21:36:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734061581] [2023-12-15 21:36:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:48,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734061581] [2023-12-15 21:36:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734061581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:48,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:48,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204137031] [2023-12-15 21:36:48,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:48,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:48,636 INFO L87 Difference]: Start difference. First operand 287 states and 410 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:48,764 INFO L93 Difference]: Finished difference Result 583 states and 832 transitions. [2023-12-15 21:36:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:36:48,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-15 21:36:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:48,767 INFO L225 Difference]: With dead ends: 583 [2023-12-15 21:36:48,767 INFO L226 Difference]: Without dead ends: 297 [2023-12-15 21:36:48,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:48,768 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 161 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:48,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 475 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-15 21:36:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2023-12-15 21:36:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 234 states have (on average 1.3333333333333333) internal successors, (312), 236 states have internal predecessors, (312), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 21:36:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 412 transitions. [2023-12-15 21:36:48,787 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 412 transitions. Word has length 128 [2023-12-15 21:36:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:48,788 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 412 transitions. [2023-12-15 21:36:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 412 transitions. [2023-12-15 21:36:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-15 21:36:48,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:48,791 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:48,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 21:36:48,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:48,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2108650929, now seen corresponding path program 1 times [2023-12-15 21:36:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:48,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800883575] [2023-12-15 21:36:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:48,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:48,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:48,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800883575] [2023-12-15 21:36:48,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800883575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:48,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:48,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:48,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502868262] [2023-12-15 21:36:48,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:48,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:48,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:48,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:48,965 INFO L87 Difference]: Start difference. First operand 291 states and 412 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:49,044 INFO L93 Difference]: Finished difference Result 715 states and 1002 transitions. [2023-12-15 21:36:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:36:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-15 21:36:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:49,047 INFO L225 Difference]: With dead ends: 715 [2023-12-15 21:36:49,048 INFO L226 Difference]: Without dead ends: 425 [2023-12-15 21:36:49,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:49,049 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 152 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:49,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 490 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:36:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-15 21:36:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 207. [2023-12-15 21:36:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.311377245508982) internal successors, (219), 167 states have internal predecessors, (219), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:36:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 287 transitions. [2023-12-15 21:36:49,068 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 287 transitions. Word has length 129 [2023-12-15 21:36:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:49,068 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 287 transitions. [2023-12-15 21:36:49,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 287 transitions. [2023-12-15 21:36:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:49,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:49,069 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:49,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 21:36:49,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:49,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1472401365, now seen corresponding path program 1 times [2023-12-15 21:36:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490144540] [2023-12-15 21:36:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:49,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490144540] [2023-12-15 21:36:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490144540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:49,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:49,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:36:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578007386] [2023-12-15 21:36:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:49,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:36:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:36:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:36:49,444 INFO L87 Difference]: Start difference. First operand 207 states and 287 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:49,685 INFO L93 Difference]: Finished difference Result 476 states and 663 transitions. [2023-12-15 21:36:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:36:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:49,687 INFO L225 Difference]: With dead ends: 476 [2023-12-15 21:36:49,688 INFO L226 Difference]: Without dead ends: 270 [2023-12-15 21:36:49,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:36:49,690 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 161 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:49,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 934 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:36:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-15 21:36:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2023-12-15 21:36:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 184 states have (on average 1.309782608695652) internal successors, (241), 184 states have internal predecessors, (241), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:36:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2023-12-15 21:36:49,703 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 130 [2023-12-15 21:36:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:49,704 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2023-12-15 21:36:49,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2023-12-15 21:36:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:49,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:49,706 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:49,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 21:36:49,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:49,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash -771336787, now seen corresponding path program 1 times [2023-12-15 21:36:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:49,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468508529] [2023-12-15 21:36:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:49,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:49,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468508529] [2023-12-15 21:36:49,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468508529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:49,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:49,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:36:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504037816] [2023-12-15 21:36:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:49,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:36:49,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:36:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:49,918 INFO L87 Difference]: Start difference. First operand 224 states and 309 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:50,053 INFO L93 Difference]: Finished difference Result 501 states and 693 transitions. [2023-12-15 21:36:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:36:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:50,055 INFO L225 Difference]: With dead ends: 501 [2023-12-15 21:36:50,055 INFO L226 Difference]: Without dead ends: 278 [2023-12-15 21:36:50,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:36:50,056 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 94 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:50,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 651 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-15 21:36:50,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 253. [2023-12-15 21:36:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 210 states have (on average 1.319047619047619) internal successors, (277), 211 states have internal predecessors, (277), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:36:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 349 transitions. [2023-12-15 21:36:50,069 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 349 transitions. Word has length 130 [2023-12-15 21:36:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:50,069 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 349 transitions. [2023-12-15 21:36:50,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 349 transitions. [2023-12-15 21:36:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:50,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:50,070 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 21:36:50,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:50,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1133622189, now seen corresponding path program 1 times [2023-12-15 21:36:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553749681] [2023-12-15 21:36:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553749681] [2023-12-15 21:36:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553749681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:50,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:36:50,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080984356] [2023-12-15 21:36:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:36:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:36:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:50,281 INFO L87 Difference]: Start difference. First operand 253 states and 349 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:50,395 INFO L93 Difference]: Finished difference Result 512 states and 702 transitions. [2023-12-15 21:36:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:36:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:50,397 INFO L225 Difference]: With dead ends: 512 [2023-12-15 21:36:50,397 INFO L226 Difference]: Without dead ends: 260 [2023-12-15 21:36:50,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:36:50,398 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 87 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:50,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 524 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-15 21:36:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 228. [2023-12-15 21:36:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 187 states have (on average 1.2941176470588236) internal successors, (242), 187 states have internal predecessors, (242), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:36:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 310 transitions. [2023-12-15 21:36:50,414 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 310 transitions. Word has length 130 [2023-12-15 21:36:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:50,414 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 310 transitions. [2023-12-15 21:36:50,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 310 transitions. [2023-12-15 21:36:50,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:50,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:50,415 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 21:36:50,416 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:50,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1834686767, now seen corresponding path program 1 times [2023-12-15 21:36:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488638902] [2023-12-15 21:36:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488638902] [2023-12-15 21:36:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488638902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:36:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412996928] [2023-12-15 21:36:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:36:50,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:36:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:36:50,765 INFO L87 Difference]: Start difference. First operand 228 states and 310 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:50,912 INFO L93 Difference]: Finished difference Result 479 states and 653 transitions. [2023-12-15 21:36:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:36:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:50,914 INFO L225 Difference]: With dead ends: 479 [2023-12-15 21:36:50,914 INFO L226 Difference]: Without dead ends: 252 [2023-12-15 21:36:50,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:36:50,915 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 140 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:50,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1158 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-15 21:36:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 225. [2023-12-15 21:36:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 184 states have (on average 1.2934782608695652) internal successors, (238), 184 states have internal predecessors, (238), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:36:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 306 transitions. [2023-12-15 21:36:50,944 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 306 transitions. Word has length 130 [2023-12-15 21:36:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:50,946 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 306 transitions. [2023-12-15 21:36:50,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 306 transitions. [2023-12-15 21:36:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:50,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:50,947 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:50,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 21:36:50,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:50,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1121698273, now seen corresponding path program 1 times [2023-12-15 21:36:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391512385] [2023-12-15 21:36:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:51,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:51,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391512385] [2023-12-15 21:36:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391512385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:51,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:51,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59325734] [2023-12-15 21:36:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:51,139 INFO L87 Difference]: Start difference. First operand 225 states and 306 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:51,220 INFO L93 Difference]: Finished difference Result 650 states and 886 transitions. [2023-12-15 21:36:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:36:51,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:51,223 INFO L225 Difference]: With dead ends: 650 [2023-12-15 21:36:51,223 INFO L226 Difference]: Without dead ends: 426 [2023-12-15 21:36:51,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:51,224 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 185 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:51,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 382 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:36:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-15 21:36:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 266. [2023-12-15 21:36:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 225 states have (on average 1.28) internal successors, (288), 225 states have internal predecessors, (288), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:36:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 356 transitions. [2023-12-15 21:36:51,239 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 356 transitions. Word has length 130 [2023-12-15 21:36:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:51,239 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 356 transitions. [2023-12-15 21:36:51,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 356 transitions. [2023-12-15 21:36:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:51,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:51,240 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:51,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 21:36:51,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:51,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1514725283, now seen corresponding path program 1 times [2023-12-15 21:36:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:51,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019685762] [2023-12-15 21:36:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:51,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:51,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:51,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019685762] [2023-12-15 21:36:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019685762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:51,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:36:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438804041] [2023-12-15 21:36:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:51,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:36:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:36:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:51,619 INFO L87 Difference]: Start difference. First operand 266 states and 356 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:51,772 INFO L93 Difference]: Finished difference Result 672 states and 903 transitions. [2023-12-15 21:36:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:36:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:51,774 INFO L225 Difference]: With dead ends: 672 [2023-12-15 21:36:51,774 INFO L226 Difference]: Without dead ends: 407 [2023-12-15 21:36:51,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:36:51,775 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 191 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:51,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 584 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-15 21:36:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 321. [2023-12-15 21:36:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 280 states have (on average 1.2821428571428573) internal successors, (359), 280 states have internal predecessors, (359), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:36:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 427 transitions. [2023-12-15 21:36:51,790 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 427 transitions. Word has length 130 [2023-12-15 21:36:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:51,790 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 427 transitions. [2023-12-15 21:36:51,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 427 transitions. [2023-12-15 21:36:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:36:51,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:51,791 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 21:36:51,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:51,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1374176673, now seen corresponding path program 1 times [2023-12-15 21:36:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822894861] [2023-12-15 21:36:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822894861] [2023-12-15 21:36:51,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822894861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:51,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:51,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:51,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694661905] [2023-12-15 21:36:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:51,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:51,965 INFO L87 Difference]: Start difference. First operand 321 states and 427 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:52,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:52,052 INFO L93 Difference]: Finished difference Result 775 states and 1028 transitions. [2023-12-15 21:36:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:36:52,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:36:52,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:52,054 INFO L225 Difference]: With dead ends: 775 [2023-12-15 21:36:52,055 INFO L226 Difference]: Without dead ends: 455 [2023-12-15 21:36:52,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:52,056 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 159 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:52,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 534 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-15 21:36:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 417. [2023-12-15 21:36:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 350 states have (on average 1.26) internal successors, (441), 352 states have internal predecessors, (441), 54 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 21:36:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 549 transitions. [2023-12-15 21:36:52,100 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 549 transitions. Word has length 130 [2023-12-15 21:36:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:52,100 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 549 transitions. [2023-12-15 21:36:52,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 549 transitions. [2023-12-15 21:36:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:52,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:52,102 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:52,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 21:36:52,102 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:52,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1341429018, now seen corresponding path program 1 times [2023-12-15 21:36:52,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:52,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690944935] [2023-12-15 21:36:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690944935] [2023-12-15 21:36:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690944935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523801842] [2023-12-15 21:36:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:52,210 INFO L87 Difference]: Start difference. First operand 417 states and 549 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:52,309 INFO L93 Difference]: Finished difference Result 1185 states and 1559 transitions. [2023-12-15 21:36:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:36:52,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:52,312 INFO L225 Difference]: With dead ends: 1185 [2023-12-15 21:36:52,312 INFO L226 Difference]: Without dead ends: 769 [2023-12-15 21:36:52,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:52,313 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 95 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:52,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 454 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-12-15 21:36:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 687. [2023-12-15 21:36:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 596 states have (on average 1.2651006711409396) internal successors, (754), 602 states have internal predecessors, (754), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 894 transitions. [2023-12-15 21:36:52,357 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 894 transitions. Word has length 134 [2023-12-15 21:36:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:52,357 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 894 transitions. [2023-12-15 21:36:52,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 894 transitions. [2023-12-15 21:36:52,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:52,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:52,358 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 21:36:52,359 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:52,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2144191652, now seen corresponding path program 1 times [2023-12-15 21:36:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477386221] [2023-12-15 21:36:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477386221] [2023-12-15 21:36:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477386221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:52,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:36:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477887735] [2023-12-15 21:36:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:52,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:36:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:36:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:36:52,723 INFO L87 Difference]: Start difference. First operand 687 states and 894 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:52,972 INFO L93 Difference]: Finished difference Result 1420 states and 1850 transitions. [2023-12-15 21:36:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:36:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:52,975 INFO L225 Difference]: With dead ends: 1420 [2023-12-15 21:36:52,975 INFO L226 Difference]: Without dead ends: 734 [2023-12-15 21:36:52,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:36:52,976 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 142 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:52,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1020 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-15 21:36:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 699. [2023-12-15 21:36:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 608 states have (on average 1.2598684210526316) internal successors, (766), 614 states have internal predecessors, (766), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 906 transitions. [2023-12-15 21:36:53,019 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 906 transitions. Word has length 134 [2023-12-15 21:36:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:53,020 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 906 transitions. [2023-12-15 21:36:53,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 906 transitions. [2023-12-15 21:36:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:53,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:53,021 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:53,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 21:36:53,021 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:53,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1769339663, now seen corresponding path program 1 times [2023-12-15 21:36:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:53,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795195033] [2023-12-15 21:36:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795195033] [2023-12-15 21:36:53,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795195033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:53,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:53,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675264190] [2023-12-15 21:36:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:53,211 INFO L87 Difference]: Start difference. First operand 699 states and 906 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:53,319 INFO L93 Difference]: Finished difference Result 1667 states and 2174 transitions. [2023-12-15 21:36:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:36:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:53,322 INFO L225 Difference]: With dead ends: 1667 [2023-12-15 21:36:53,322 INFO L226 Difference]: Without dead ends: 969 [2023-12-15 21:36:53,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:53,324 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 98 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:53,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 477 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:36:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-12-15 21:36:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 723. [2023-12-15 21:36:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 632 states have (on average 1.2563291139240507) internal successors, (794), 638 states have internal predecessors, (794), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 934 transitions. [2023-12-15 21:36:53,381 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 934 transitions. Word has length 134 [2023-12-15 21:36:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:53,382 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 934 transitions. [2023-12-15 21:36:53,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 934 transitions. [2023-12-15 21:36:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:53,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:53,384 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 21:36:53,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:53,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash 959993037, now seen corresponding path program 1 times [2023-12-15 21:36:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346812987] [2023-12-15 21:36:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:53,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346812987] [2023-12-15 21:36:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346812987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:36:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308866627] [2023-12-15 21:36:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:53,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:36:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:36:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:53,518 INFO L87 Difference]: Start difference. First operand 723 states and 934 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:53,597 INFO L93 Difference]: Finished difference Result 1515 states and 1967 transitions. [2023-12-15 21:36:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:36:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:53,601 INFO L225 Difference]: With dead ends: 1515 [2023-12-15 21:36:53,601 INFO L226 Difference]: Without dead ends: 793 [2023-12-15 21:36:53,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:36:53,602 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 49 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:53,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 563 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:36:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-15 21:36:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 733. [2023-12-15 21:36:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 642 states have (on average 1.249221183800623) internal successors, (802), 648 states have internal predecessors, (802), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2023-12-15 21:36:53,649 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 134 [2023-12-15 21:36:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:53,649 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2023-12-15 21:36:53,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2023-12-15 21:36:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:53,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:53,651 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:53,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 21:36:53,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:53,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1403468632, now seen corresponding path program 1 times [2023-12-15 21:36:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685541220] [2023-12-15 21:36:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:53,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685541220] [2023-12-15 21:36:53,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685541220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:53,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:53,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:36:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605838451] [2023-12-15 21:36:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:53,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:36:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:36:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:36:53,977 INFO L87 Difference]: Start difference. First operand 733 states and 942 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:54,276 INFO L93 Difference]: Finished difference Result 1727 states and 2217 transitions. [2023-12-15 21:36:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:36:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:54,279 INFO L225 Difference]: With dead ends: 1727 [2023-12-15 21:36:54,279 INFO L226 Difference]: Without dead ends: 995 [2023-12-15 21:36:54,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:36:54,281 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 181 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:54,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 876 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:36:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-12-15 21:36:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 743. [2023-12-15 21:36:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 652 states have (on average 1.2469325153374233) internal successors, (813), 658 states have internal predecessors, (813), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 953 transitions. [2023-12-15 21:36:54,332 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 953 transitions. Word has length 134 [2023-12-15 21:36:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:54,332 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 953 transitions. [2023-12-15 21:36:54,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 953 transitions. [2023-12-15 21:36:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:54,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:54,334 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:54,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 21:36:54,334 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:54,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash -980766806, now seen corresponding path program 1 times [2023-12-15 21:36:54,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:54,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878185717] [2023-12-15 21:36:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:54,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:36:54,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:54,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878185717] [2023-12-15 21:36:54,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878185717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:36:54,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356177654] [2023-12-15 21:36:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:54,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:54,622 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) [2023-12-15 21:36:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:36:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:54,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:36:54,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:36:54,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-15 21:36:54,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-15 21:36:54,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:36:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:36:55,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:36:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:55,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356177654] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:36:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:36:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 12] total 19 [2023-12-15 21:36:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82967858] [2023-12-15 21:36:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:55,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:36:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:36:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:36:55,165 INFO L87 Difference]: Start difference. First operand 743 states and 953 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:55,478 INFO L93 Difference]: Finished difference Result 1805 states and 2323 transitions. [2023-12-15 21:36:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 21:36:55,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:55,481 INFO L225 Difference]: With dead ends: 1805 [2023-12-15 21:36:55,481 INFO L226 Difference]: Without dead ends: 1063 [2023-12-15 21:36:55,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-12-15 21:36:55,483 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 151 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:55,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1233 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-15 21:36:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 887. [2023-12-15 21:36:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 796 states have (on average 1.256281407035176) internal successors, (1000), 802 states have internal predecessors, (1000), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1140 transitions. [2023-12-15 21:36:55,532 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1140 transitions. Word has length 134 [2023-12-15 21:36:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:55,532 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1140 transitions. [2023-12-15 21:36:55,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1140 transitions. [2023-12-15 21:36:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:55,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:55,534 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:55,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:36:55,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:55,740 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:55,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1790113432, now seen corresponding path program 1 times [2023-12-15 21:36:55,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:55,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551329147] [2023-12-15 21:36:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:55,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551329147] [2023-12-15 21:36:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551329147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:55,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:55,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:55,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877223993] [2023-12-15 21:36:55,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:55,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:55,845 INFO L87 Difference]: Start difference. First operand 887 states and 1140 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:55,978 INFO L93 Difference]: Finished difference Result 1941 states and 2486 transitions. [2023-12-15 21:36:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:36:55,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:55,981 INFO L225 Difference]: With dead ends: 1941 [2023-12-15 21:36:55,981 INFO L226 Difference]: Without dead ends: 1055 [2023-12-15 21:36:55,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:55,983 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 78 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:55,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 459 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-12-15 21:36:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 883. [2023-12-15 21:36:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 792 states have (on average 1.2525252525252526) internal successors, (992), 798 states have internal predecessors, (992), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 64 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:36:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1132 transitions. [2023-12-15 21:36:56,026 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1132 transitions. Word has length 134 [2023-12-15 21:36:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:56,026 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1132 transitions. [2023-12-15 21:36:56,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1132 transitions. [2023-12-15 21:36:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:56,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:56,028 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:56,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 21:36:56,028 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:56,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2121307972, now seen corresponding path program 1 times [2023-12-15 21:36:56,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:56,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937877911] [2023-12-15 21:36:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:56,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:36:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462060515] [2023-12-15 21:36:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:56,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:56,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:56,047 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) [2023-12-15 21:36:56,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:36:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:56,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:36:56,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:36:56,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-15 21:36:56,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-15 21:36:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:56,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:36:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937877911] [2023-12-15 21:36:56,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:36:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462060515] [2023-12-15 21:36:56,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462060515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:56,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:56,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827879867] [2023-12-15 21:36:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:56,332 INFO L87 Difference]: Start difference. First operand 883 states and 1132 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:56,458 INFO L93 Difference]: Finished difference Result 1841 states and 2350 transitions. [2023-12-15 21:36:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:36:56,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:56,462 INFO L225 Difference]: With dead ends: 1841 [2023-12-15 21:36:56,462 INFO L226 Difference]: Without dead ends: 959 [2023-12-15 21:36:56,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:56,463 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 74 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:56,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 479 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-15 21:36:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 917. [2023-12-15 21:36:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 808 states have (on average 1.2326732673267327) internal successors, (996), 815 states have internal predecessors, (996), 82 states have call successors, (82), 26 states have call predecessors, (82), 26 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 21:36:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1160 transitions. [2023-12-15 21:36:56,516 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1160 transitions. Word has length 134 [2023-12-15 21:36:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:56,517 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1160 transitions. [2023-12-15 21:36:56,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1160 transitions. [2023-12-15 21:36:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:36:56,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:56,518 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:56,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:36:56,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-15 21:36:56,724 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash 937109357, now seen corresponding path program 1 times [2023-12-15 21:36:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:56,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218639852] [2023-12-15 21:36:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:56,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:36:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888701003] [2023-12-15 21:36:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:56,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:56,778 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) [2023-12-15 21:36:56,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:36:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:56,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:36:56,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:36:56,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-15 21:36:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:57,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:36:57,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218639852] [2023-12-15 21:36:57,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:36:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888701003] [2023-12-15 21:36:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888701003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:36:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179381840] [2023-12-15 21:36:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:57,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:36:57,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:57,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:36:57,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:57,022 INFO L87 Difference]: Start difference. First operand 917 states and 1160 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:57,166 INFO L93 Difference]: Finished difference Result 1986 states and 2518 transitions. [2023-12-15 21:36:57,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:36:57,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:36:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:57,170 INFO L225 Difference]: With dead ends: 1986 [2023-12-15 21:36:57,170 INFO L226 Difference]: Without dead ends: 1086 [2023-12-15 21:36:57,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:36:57,172 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 102 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 865 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-12-15 21:36:57,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 962. [2023-12-15 21:36:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 853 states have (on average 1.235638921453693) internal successors, (1054), 860 states have internal predecessors, (1054), 82 states have call successors, (82), 26 states have call predecessors, (82), 26 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 21:36:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1218 transitions. [2023-12-15 21:36:57,249 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1218 transitions. Word has length 134 [2023-12-15 21:36:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:57,250 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1218 transitions. [2023-12-15 21:36:57,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1218 transitions. [2023-12-15 21:36:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-15 21:36:57,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:57,251 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:57,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:36:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:57,458 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:57,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1543955261, now seen corresponding path program 1 times [2023-12-15 21:36:57,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:57,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689413165] [2023-12-15 21:36:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:57,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:36:57,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453072945] [2023-12-15 21:36:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:57,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:57,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:57,483 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) [2023-12-15 21:36:57,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:36:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:57,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:36:57,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:36:57,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-15 21:36:57,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-15 21:36:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:57,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:36:57,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689413165] [2023-12-15 21:36:57,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:36:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453072945] [2023-12-15 21:36:57,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453072945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:57,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:57,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583178324] [2023-12-15 21:36:57,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:57,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:57,742 INFO L87 Difference]: Start difference. First operand 962 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:57,871 INFO L93 Difference]: Finished difference Result 1911 states and 2412 transitions. [2023-12-15 21:36:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:36:57,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2023-12-15 21:36:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:57,874 INFO L225 Difference]: With dead ends: 1911 [2023-12-15 21:36:57,874 INFO L226 Difference]: Without dead ends: 966 [2023-12-15 21:36:57,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:36:57,876 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 71 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:57,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 502 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-15 21:36:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 940. [2023-12-15 21:36:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 827 states have (on average 1.218863361547763) internal successors, (1008), 834 states have internal predecessors, (1008), 82 states have call successors, (82), 30 states have call predecessors, (82), 30 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 21:36:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1172 transitions. [2023-12-15 21:36:57,924 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1172 transitions. Word has length 135 [2023-12-15 21:36:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:57,924 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1172 transitions. [2023-12-15 21:36:57,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1172 transitions. [2023-12-15 21:36:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 21:36:57,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:57,925 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:57,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:36:58,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:58,134 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:58,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1703438152, now seen corresponding path program 1 times [2023-12-15 21:36:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40507217] [2023-12-15 21:36:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:58,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:36:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:36:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:36:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:36:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:36:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:36:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:36:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:36:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:36:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:36:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:36:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:36:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:36:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:36:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:36:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:36:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:36:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40507217] [2023-12-15 21:36:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40507217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:58,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:58,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:36:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133138672] [2023-12-15 21:36:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:36:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:36:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:36:58,582 INFO L87 Difference]: Start difference. First operand 940 states and 1172 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 21:36:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:58,919 INFO L93 Difference]: Finished difference Result 1484 states and 1804 transitions. [2023-12-15 21:36:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:36:58,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 136 [2023-12-15 21:36:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:58,923 INFO L225 Difference]: With dead ends: 1484 [2023-12-15 21:36:58,923 INFO L226 Difference]: Without dead ends: 1482 [2023-12-15 21:36:58,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:36:58,925 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 182 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:58,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 770 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:36:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-12-15 21:36:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1478. [2023-12-15 21:36:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1265 states have (on average 1.1731225296442689) internal successors, (1484), 1280 states have internal predecessors, (1484), 154 states have call successors, (154), 58 states have call predecessors, (154), 58 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:36:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1792 transitions. [2023-12-15 21:36:59,024 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1792 transitions. Word has length 136 [2023-12-15 21:36:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:59,024 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1792 transitions. [2023-12-15 21:36:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 21:36:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1792 transitions. [2023-12-15 21:36:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 21:36:59,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:59,026 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 21:36:59,027 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:59,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:59,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2068353727, now seen corresponding path program 1 times [2023-12-15 21:36:59,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:59,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633559131] [2023-12-15 21:36:59,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:59,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:59,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:36:59,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931834208] [2023-12-15 21:36:59,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:59,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:59,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:59,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:36:59,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:36:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:36:59,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:36:59,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:36:59,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-15 21:36:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:36:59,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:36:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:36:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633559131] [2023-12-15 21:36:59,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:36:59,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931834208] [2023-12-15 21:36:59,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931834208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:36:59,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:36:59,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:36:59,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962032368] [2023-12-15 21:36:59,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:36:59,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:36:59,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:36:59,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:36:59,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:36:59,303 INFO L87 Difference]: Start difference. First operand 1478 states and 1792 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:36:59,491 INFO L93 Difference]: Finished difference Result 3075 states and 3720 transitions. [2023-12-15 21:36:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:36:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-15 21:36:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:36:59,495 INFO L225 Difference]: With dead ends: 3075 [2023-12-15 21:36:59,495 INFO L226 Difference]: Without dead ends: 1614 [2023-12-15 21:36:59,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:36:59,497 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 70 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:36:59,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 607 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:36:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-12-15 21:36:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1460. [2023-12-15 21:36:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1247 states have (on average 1.1643945469125903) internal successors, (1452), 1262 states have internal predecessors, (1452), 154 states have call successors, (154), 58 states have call predecessors, (154), 58 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:36:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1760 transitions. [2023-12-15 21:36:59,603 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1760 transitions. Word has length 136 [2023-12-15 21:36:59,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:36:59,603 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 1760 transitions. [2023-12-15 21:36:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:36:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1760 transitions. [2023-12-15 21:36:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-15 21:36:59,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:36:59,605 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:36:59,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:36:59,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-15 21:36:59,812 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:36:59,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:36:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash -347971290, now seen corresponding path program 1 times [2023-12-15 21:36:59,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:36:59,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525990188] [2023-12-15 21:36:59,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:59,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:36:59,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:36:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729306925] [2023-12-15 21:36:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:36:59,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:36:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:36:59,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:36:59,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:37:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:00,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:37:00,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:00,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:37:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:00,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:37:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525990188] [2023-12-15 21:37:00,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729306925] [2023-12-15 21:37:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729306925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:37:00,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:37:00,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:37:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424002720] [2023-12-15 21:37:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:00,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:37:00,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:37:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:37:00,066 INFO L87 Difference]: Start difference. First operand 1460 states and 1760 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:00,192 INFO L93 Difference]: Finished difference Result 2554 states and 3091 transitions. [2023-12-15 21:37:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:37:00,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 137 [2023-12-15 21:37:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:00,195 INFO L225 Difference]: With dead ends: 2554 [2023-12-15 21:37:00,195 INFO L226 Difference]: Without dead ends: 1111 [2023-12-15 21:37:00,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:37:00,198 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 76 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:00,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 437 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-12-15 21:37:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1076. [2023-12-15 21:37:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 915 states have (on average 1.1562841530054644) internal successors, (1058), 925 states have internal predecessors, (1058), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 108 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-15 21:37:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1294 transitions. [2023-12-15 21:37:00,290 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1294 transitions. Word has length 137 [2023-12-15 21:37:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:00,290 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1294 transitions. [2023-12-15 21:37:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1294 transitions. [2023-12-15 21:37:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-15 21:37:00,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:00,292 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:00,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:00,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 21:37:00,501 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:00,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 826294347, now seen corresponding path program 1 times [2023-12-15 21:37:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871454754] [2023-12-15 21:37:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:00,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140166763] [2023-12-15 21:37:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:00,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:00,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:00,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:00,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:37:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:00,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:37:00,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:00,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-15 21:37:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:00,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:37:00,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:00,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871454754] [2023-12-15 21:37:00,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:00,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140166763] [2023-12-15 21:37:00,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140166763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:37:00,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:37:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:37:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670171071] [2023-12-15 21:37:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:00,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:37:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:37:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:37:00,795 INFO L87 Difference]: Start difference. First operand 1076 states and 1294 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:00,934 INFO L93 Difference]: Finished difference Result 2129 states and 2553 transitions. [2023-12-15 21:37:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:37:00,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-15 21:37:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:00,938 INFO L225 Difference]: With dead ends: 2129 [2023-12-15 21:37:00,938 INFO L226 Difference]: Without dead ends: 1054 [2023-12-15 21:37:00,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:37:00,941 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 85 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:00,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 607 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-15 21:37:01,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1015. [2023-12-15 21:37:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 854 states have (on average 1.1463700234192038) internal successors, (979), 864 states have internal predecessors, (979), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 108 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-15 21:37:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1215 transitions. [2023-12-15 21:37:01,027 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1215 transitions. Word has length 138 [2023-12-15 21:37:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:01,028 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1215 transitions. [2023-12-15 21:37:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1215 transitions. [2023-12-15 21:37:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:01,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:01,029 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:01,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:01,238 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:01,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash 336233147, now seen corresponding path program 1 times [2023-12-15 21:37:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:01,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899347320] [2023-12-15 21:37:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:01,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:01,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748490742] [2023-12-15 21:37:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:01,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:01,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:01,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:01,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:37:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:01,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:37:01,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:01,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:37:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:01,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:37:01,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:01,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899347320] [2023-12-15 21:37:01,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:01,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748490742] [2023-12-15 21:37:01,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748490742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:37:01,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:37:01,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:37:01,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77485128] [2023-12-15 21:37:01,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:01,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:37:01,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:37:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:37:01,505 INFO L87 Difference]: Start difference. First operand 1015 states and 1215 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:01,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:01,647 INFO L93 Difference]: Finished difference Result 2014 states and 2394 transitions. [2023-12-15 21:37:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:37:01,647 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), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:01,650 INFO L225 Difference]: With dead ends: 2014 [2023-12-15 21:37:01,650 INFO L226 Difference]: Without dead ends: 1000 [2023-12-15 21:37:01,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:37:01,652 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 54 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:01,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 427 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-15 21:37:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 967. [2023-12-15 21:37:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 806 states have (on average 1.1153846153846154) internal successors, (899), 816 states have internal predecessors, (899), 118 states have call successors, (118), 42 states have call predecessors, (118), 42 states have return successors, (118), 108 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-15 21:37:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1135 transitions. [2023-12-15 21:37:01,741 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1135 transitions. Word has length 139 [2023-12-15 21:37:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:01,741 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1135 transitions. [2023-12-15 21:37:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1135 transitions. [2023-12-15 21:37:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:01,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:01,742 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:01,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:01,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-15 21:37:01,948 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:01,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash -301435502, now seen corresponding path program 1 times [2023-12-15 21:37:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:01,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797716287] [2023-12-15 21:37:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:01,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:01,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658153878] [2023-12-15 21:37:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:01,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:01,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:01,966 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:01,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:37:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:02,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 21:37:02,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:02,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2023-12-15 21:37:02,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2023-12-15 21:37:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:37:02,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:37:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797716287] [2023-12-15 21:37:02,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658153878] [2023-12-15 21:37:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658153878] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:37:02,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:37:02,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-15 21:37:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153980869] [2023-12-15 21:37:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:02,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:37:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:37:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:37:02,634 INFO L87 Difference]: Start difference. First operand 967 states and 1135 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:02,855 INFO L93 Difference]: Finished difference Result 1246 states and 1464 transitions. [2023-12-15 21:37:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:37:02,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:02,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:02,858 INFO L225 Difference]: With dead ends: 1246 [2023-12-15 21:37:02,858 INFO L226 Difference]: Without dead ends: 1244 [2023-12-15 21:37:02,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:37:02,860 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 81 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:02,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 943 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-12-15 21:37:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1240. [2023-12-15 21:37:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1029 states have (on average 1.1156462585034013) internal successors, (1148), 1043 states have internal predecessors, (1148), 154 states have call successors, (154), 56 states have call predecessors, (154), 56 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:37:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1456 transitions. [2023-12-15 21:37:02,975 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1456 transitions. Word has length 139 [2023-12-15 21:37:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:02,976 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1456 transitions. [2023-12-15 21:37:02,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1456 transitions. [2023-12-15 21:37:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:02,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:02,977 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:02,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-15 21:37:03,184 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:03,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash -244177200, now seen corresponding path program 1 times [2023-12-15 21:37:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:03,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440527209] [2023-12-15 21:37:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:03,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198323530] [2023-12-15 21:37:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:03,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:03,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:03,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:03,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:37:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:03,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-15 21:37:03,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:04,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:37:04,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-12-15 21:37:04,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-12-15 21:37:04,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2023-12-15 21:37:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:37:04,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:37:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440527209] [2023-12-15 21:37:05,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198323530] [2023-12-15 21:37:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198323530] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:37:05,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:37:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-15 21:37:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729725004] [2023-12-15 21:37:05,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:37:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:37:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:37:05,343 INFO L87 Difference]: Start difference. First operand 1240 states and 1456 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:08,820 INFO L93 Difference]: Finished difference Result 2756 states and 3228 transitions. [2023-12-15 21:37:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:37:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:08,825 INFO L225 Difference]: With dead ends: 2756 [2023-12-15 21:37:08,825 INFO L226 Difference]: Without dead ends: 1517 [2023-12-15 21:37:08,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:37:08,828 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 53 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 686 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 21:37:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2023-12-15 21:37:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1362. [2023-12-15 21:37:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1151 states have (on average 1.1242397914856646) internal successors, (1294), 1165 states have internal predecessors, (1294), 154 states have call successors, (154), 56 states have call predecessors, (154), 56 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:37:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1602 transitions. [2023-12-15 21:37:08,921 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1602 transitions. Word has length 139 [2023-12-15 21:37:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:08,936 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1602 transitions. [2023-12-15 21:37:08,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1602 transitions. [2023-12-15 21:37:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:08,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:08,938 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:08,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:09,145 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:09,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1530830162, now seen corresponding path program 1 times [2023-12-15 21:37:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816130623] [2023-12-15 21:37:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:09,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:09,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:09,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078961425] [2023-12-15 21:37:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:09,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:09,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:09,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:37:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:09,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:37:09,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:09,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-15 21:37:09,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-15 21:37:09,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-15 21:37:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:09,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:37:09,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:09,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816130623] [2023-12-15 21:37:09,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:09,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078961425] [2023-12-15 21:37:09,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078961425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:37:09,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:37:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:37:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997173710] [2023-12-15 21:37:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:09,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:37:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:37:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:37:09,433 INFO L87 Difference]: Start difference. First operand 1362 states and 1602 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:09,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:09,637 INFO L93 Difference]: Finished difference Result 3295 states and 3827 transitions. [2023-12-15 21:37:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:37:09,637 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), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:09,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:09,642 INFO L225 Difference]: With dead ends: 3295 [2023-12-15 21:37:09,643 INFO L226 Difference]: Without dead ends: 1934 [2023-12-15 21:37:09,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:37:09,646 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:09,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 398 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2023-12-15 21:37:09,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1456. [2023-12-15 21:37:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1245 states have (on average 1.121285140562249) internal successors, (1396), 1259 states have internal predecessors, (1396), 154 states have call successors, (154), 56 states have call predecessors, (154), 56 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:37:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1704 transitions. [2023-12-15 21:37:09,760 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1704 transitions. Word has length 139 [2023-12-15 21:37:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:09,761 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1704 transitions. [2023-12-15 21:37:09,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1704 transitions. [2023-12-15 21:37:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:09,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:09,764 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:09,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:09,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-15 21:37:09,970 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:09,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash -435449008, now seen corresponding path program 1 times [2023-12-15 21:37:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337567058] [2023-12-15 21:37:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:09,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:09,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92765822] [2023-12-15 21:37:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:09,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:09,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:09,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:37:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:10,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-15 21:37:10,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:10,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:37:12,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-12-15 21:37:12,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2023-12-15 21:37:12,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2023-12-15 21:37:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:37:12,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:37:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:15,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337567058] [2023-12-15 21:37:15,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92765822] [2023-12-15 21:37:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92765822] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:37:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:37:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-15 21:37:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849248814] [2023-12-15 21:37:15,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:15,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:37:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:37:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:37:15,393 INFO L87 Difference]: Start difference. First operand 1456 states and 1704 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:20,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:20,250 INFO L93 Difference]: Finished difference Result 3033 states and 3540 transitions. [2023-12-15 21:37:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:37:20,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:20,255 INFO L225 Difference]: With dead ends: 3033 [2023-12-15 21:37:20,255 INFO L226 Difference]: Without dead ends: 1578 [2023-12-15 21:37:20,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:37:20,258 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 94 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:20,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 649 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 21:37:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-15 21:37:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1460. [2023-12-15 21:37:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1249 states have (on average 1.120896717373899) internal successors, (1400), 1263 states have internal predecessors, (1400), 154 states have call successors, (154), 56 states have call predecessors, (154), 56 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:37:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1708 transitions. [2023-12-15 21:37:20,350 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1708 transitions. Word has length 139 [2023-12-15 21:37:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:20,351 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 1708 transitions. [2023-12-15 21:37:20,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:20,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1708 transitions. [2023-12-15 21:37:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:20,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:20,352 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:20,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-15 21:37:20,559 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:20,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash -378190706, now seen corresponding path program 1 times [2023-12-15 21:37:20,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:20,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747063913] [2023-12-15 21:37:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:20,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499817126] [2023-12-15 21:37:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:20,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:20,577 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:20,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:37:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:20,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:37:20,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:20,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-15 21:37:20,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2023-12-15 21:37:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:20,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:37:20,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:20,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747063913] [2023-12-15 21:37:20,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:20,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499817126] [2023-12-15 21:37:20,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499817126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:37:20,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:37:20,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:37:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190106991] [2023-12-15 21:37:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:20,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:37:20,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:37:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:37:20,854 INFO L87 Difference]: Start difference. First operand 1460 states and 1708 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:21,103 INFO L93 Difference]: Finished difference Result 1534 states and 1790 transitions. [2023-12-15 21:37:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:37:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:21,107 INFO L225 Difference]: With dead ends: 1534 [2023-12-15 21:37:21,107 INFO L226 Difference]: Without dead ends: 1532 [2023-12-15 21:37:21,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:37:21,108 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 77 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:21,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1003 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-12-15 21:37:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1360. [2023-12-15 21:37:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1181 states have (on average 1.1244707874682474) internal successors, (1328), 1192 states have internal predecessors, (1328), 130 states have call successors, (130), 48 states have call predecessors, (130), 48 states have return successors, (130), 119 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-15 21:37:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1588 transitions. [2023-12-15 21:37:21,201 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1588 transitions. Word has length 139 [2023-12-15 21:37:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:21,201 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1588 transitions. [2023-12-15 21:37:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1588 transitions. [2023-12-15 21:37:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:21,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:21,203 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:21,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:21,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-15 21:37:21,410 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:21,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1679050834, now seen corresponding path program 1 times [2023-12-15 21:37:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975980038] [2023-12-15 21:37:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:21,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927186771] [2023-12-15 21:37:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:21,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:21,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:21,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:21,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:37:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:21,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:37:21,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:21,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-15 21:37:21,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-15 21:37:21,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:37:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:21,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:37:21,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975980038] [2023-12-15 21:37:21,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927186771] [2023-12-15 21:37:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927186771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:37:21,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:37:21,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:37:21,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033441219] [2023-12-15 21:37:21,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:21,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:37:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:21,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:37:21,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:37:21,683 INFO L87 Difference]: Start difference. First operand 1360 states and 1588 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:21,864 INFO L93 Difference]: Finished difference Result 3051 states and 3516 transitions. [2023-12-15 21:37:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:37:21,865 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), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:21,869 INFO L225 Difference]: With dead ends: 3051 [2023-12-15 21:37:21,870 INFO L226 Difference]: Without dead ends: 1732 [2023-12-15 21:37:21,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:37:21,871 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 41 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:21,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 518 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:37:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-15 21:37:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1360. [2023-12-15 21:37:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1181 states have (on average 1.117696867061812) internal successors, (1320), 1192 states have internal predecessors, (1320), 130 states have call successors, (130), 48 states have call predecessors, (130), 48 states have return successors, (130), 119 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-15 21:37:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1580 transitions. [2023-12-15 21:37:21,963 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1580 transitions. Word has length 139 [2023-12-15 21:37:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:21,964 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1580 transitions. [2023-12-15 21:37:21,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1580 transitions. [2023-12-15 21:37:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:21,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:21,965 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:21,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:22,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:22,171 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -840909100, now seen corresponding path program 1 times [2023-12-15 21:37:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138272740] [2023-12-15 21:37:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:22,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745431499] [2023-12-15 21:37:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:22,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:22,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:22,188 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:22,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:37:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:22,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-15 21:37:22,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:22,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:37:24,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-12-15 21:37:24,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-15 21:37:24,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-15 21:37:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:37:25,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:37:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:27,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:27,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138272740] [2023-12-15 21:37:27,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:27,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745431499] [2023-12-15 21:37:27,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745431499] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:37:27,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:37:27,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-15 21:37:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115777578] [2023-12-15 21:37:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:27,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:37:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:37:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:37:27,722 INFO L87 Difference]: Start difference. First operand 1360 states and 1580 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:31,351 INFO L93 Difference]: Finished difference Result 2905 states and 3361 transitions. [2023-12-15 21:37:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:37:31,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:31,356 INFO L225 Difference]: With dead ends: 2905 [2023-12-15 21:37:31,356 INFO L226 Difference]: Without dead ends: 1586 [2023-12-15 21:37:31,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:37:31,358 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 73 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:31,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 761 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 21:37:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-15 21:37:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1476. [2023-12-15 21:37:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1260 states have (on average 1.1071428571428572) internal successors, (1395), 1274 states have internal predecessors, (1395), 156 states have call successors, (156), 59 states have call predecessors, (156), 59 states have return successors, (156), 142 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-15 21:37:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1707 transitions. [2023-12-15 21:37:31,499 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1707 transitions. Word has length 139 [2023-12-15 21:37:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 1707 transitions. [2023-12-15 21:37:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1707 transitions. [2023-12-15 21:37:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:37:31,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:37:31,501 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:37:31,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:37:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:31,706 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:37:31,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:37:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1032180908, now seen corresponding path program 1 times [2023-12-15 21:37:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:37:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044385026] [2023-12-15 21:37:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:37:31,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:37:31,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67882109] [2023-12-15 21:37:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:37:31,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:37:31,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:37:31,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:37:31,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:37:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:37:32,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-15 21:37:32,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:37:32,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:37:32,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:37:32,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2023-12-15 21:37:33,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-15 21:37:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:37:33,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:37:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:37:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:37:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044385026] [2023-12-15 21:37:36,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:37:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67882109] [2023-12-15 21:37:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67882109] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:37:36,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:37:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-15 21:37:36,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305949087] [2023-12-15 21:37:36,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:37:36,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:37:36,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:37:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:37:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:37:36,085 INFO L87 Difference]: Start difference. First operand 1476 states and 1707 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:37:39,767 INFO L93 Difference]: Finished difference Result 3159 states and 3642 transitions. [2023-12-15 21:37:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:37:39,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:37:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:37:39,768 INFO L225 Difference]: With dead ends: 3159 [2023-12-15 21:37:39,768 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 21:37:39,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:37:39,772 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 73 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:37:39,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 889 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 21:37:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 21:37:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 21:37:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:37:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 21:37:39,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2023-12-15 21:37:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:37:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 21:37:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:37:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 21:37:39,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 21:37:39,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:37:39,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:37:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-15 21:37:39,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-15 21:37:49,394 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-53-7-8-7-8-6-8-6-8-6-8-6-8-6-8-6-7-6-7-6-7-6-6-6-5-6-4-5-3-5-3-5-3-5-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-69-7-8-7-8-6-8-6-8-6-8-6-8-6-8-6-7-6-7-6-7-6-6-6-5-6-4-5-3-5-3-5-3-5-1 context. [2023-12-15 21:37:49,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 21:37:49,399 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-15 21:37:49,400 INFO L158 Benchmark]: Toolchain (without parser) took 64340.09ms. Allocated memory was 271.6MB in the beginning and 826.3MB in the end (delta: 554.7MB). Free memory was 220.0MB in the beginning and 673.4MB in the end (delta: -453.4MB). Peak memory consumption was 101.6MB. Max. memory is 8.0GB. [2023-12-15 21:37:49,401 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 218.1MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:37:49,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.67ms. Allocated memory is still 271.6MB. Free memory was 219.7MB in the beginning and 206.0MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 21:37:49,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.87ms. Allocated memory is still 271.6MB. Free memory was 206.0MB in the beginning and 202.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:37:49,404 INFO L158 Benchmark]: Boogie Preprocessor took 67.83ms. Allocated memory is still 271.6MB. Free memory was 202.9MB in the beginning and 199.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 21:37:49,407 INFO L158 Benchmark]: RCFGBuilder took 529.39ms. Allocated memory is still 271.6MB. Free memory was 198.7MB in the beginning and 226.6MB in the end (delta: -27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-15 21:37:49,408 INFO L158 Benchmark]: TraceAbstraction took 63474.25ms. Allocated memory was 271.6MB in the beginning and 826.3MB in the end (delta: 554.7MB). Free memory was 226.0MB in the beginning and 673.4MB in the end (delta: -447.3MB). Peak memory consumption was 106.8MB. Max. memory is 8.0GB. [2023-12-15 21:37:49,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 21:37:49,415 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 218.1MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.67ms. Allocated memory is still 271.6MB. Free memory was 219.7MB in the beginning and 206.0MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.87ms. Allocated memory is still 271.6MB. Free memory was 206.0MB in the beginning and 202.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.83ms. Allocated memory is still 271.6MB. Free memory was 202.9MB in the beginning and 199.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 529.39ms. Allocated memory is still 271.6MB. Free memory was 198.7MB in the beginning and 226.6MB in the end (delta: -27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 63474.25ms. Allocated memory was 271.6MB in the beginning and 826.3MB in the end (delta: 554.7MB). Free memory was 226.0MB in the beginning and 673.4MB in the end (delta: -447.3MB). Peak memory consumption was 106.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-11-6-2-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-10-6-2-6-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown