/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 false -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 [2023-12-16 04:25:10,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:25:10,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:25:10,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:25:10,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:25:10,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:25:10,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:25:10,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:25:10,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:25:10,399 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:25:10,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:25:10,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:25:10,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:25:10,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:25:10,400 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:25:10,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:25:10,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:25:10,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:25:10,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:25:10,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:25:10,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:25:10,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:25:10,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:25:10,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:25:10,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:25:10,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:25:10,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:25:10,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:25:10,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:25:10,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:25:10,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:25:10,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:25:10,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:25:10,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:25:10,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:25:10,651 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:25:10,651 INFO L431 ainManager$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 [2023-12-16 04:25:12,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:25:12,343 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:25:12,343 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-27.i [2023-12-16 04:25:12,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc89a5cf3/f35b5c7728d348aeafe368449a460f1c/FLAGb4638252d [2023-12-16 04:25:12,405 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc89a5cf3/f35b5c7728d348aeafe368449a460f1c [2023-12-16 04:25:12,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:25:12,408 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:25:12,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:25:12,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:25:12,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:25:12,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b15e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12, skipping insertion in model container [2023-12-16 04:25:12,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,440 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:25:12,611 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] [2023-12-16 04:25:12,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:25:12,678 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:25:12,689 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] [2023-12-16 04:25:12,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:25:12,747 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:25:12,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12 WrapperNode [2023-12-16 04:25:12,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:25:12,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:25:12,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:25:12,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:25:12,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,844 INFO L138 Inliner]: procedures = 26, calls = 163, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 461 [2023-12-16 04:25:12,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:25:12,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:25:12,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:25:12,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:25:12,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,890 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]. [2023-12-16 04:25:12,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:25:12,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:25:12,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:25:12,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:25:12,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (1/1) ... [2023-12-16 04:25:12,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:25:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:13,045 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) [2023-12-16 04:25:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:25:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:25:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:25:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 04:25:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-16 04:25:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-16 04:25:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-16 04:25:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-16 04:25:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-16 04:25:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-16 04:25:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-16 04:25:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-16 04:25:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-16 04:25:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-16 04:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-16 04:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-16 04:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-16 04:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-16 04:25:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-16 04:25:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:25:13,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-16 04:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-16 04:25:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-16 04:25:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-16 04:25:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-16 04:25:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:25:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:25:13,136 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 [2023-12-16 04:25:13,382 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:25:13,383 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:25:13,688 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:25:13,736 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:25:13,736 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:25:13,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:25:13 BoogieIcfgContainer [2023-12-16 04:25:13,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:25:13,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:25:13,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:25:13,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:25:13,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:25:12" (1/3) ... [2023-12-16 04:25:13,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747003ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:25:13, skipping insertion in model container [2023-12-16 04:25:13,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:25:12" (2/3) ... [2023-12-16 04:25:13,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747003ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:25:13, skipping insertion in model container [2023-12-16 04:25:13,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:25:13" (3/3) ... [2023-12-16 04:25:13,742 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-27.i [2023-12-16 04:25:13,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:25:13,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:25:13,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:25:13,792 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;@6f3a39c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:25:13,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:25:13,806 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) [2023-12-16 04:25:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 04:25:13,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:13,822 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] [2023-12-16 04:25:13,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:13,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1954445179, now seen corresponding path program 1 times [2023-12-16 04:25:13,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387371753] [2023-12-16 04:25:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:13,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:14,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:14,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387371753] [2023-12-16 04:25:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387371753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:14,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:14,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:25:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271709523] [2023-12-16 04:25:14,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:25:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:25:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:25:14,465 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) [2023-12-16 04:25:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:14,529 INFO L93 Difference]: Finished difference Result 171 states and 273 transitions. [2023-12-16 04:25:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:25:14,531 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 [2023-12-16 04:25:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:14,536 INFO L225 Difference]: With dead ends: 171 [2023-12-16 04:25:14,536 INFO L226 Difference]: Without dead ends: 85 [2023-12-16 04:25:14,538 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 [2023-12-16 04:25:14,543 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 [2023-12-16 04:25:14,556 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] [2023-12-16 04:25:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-16 04:25:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-16 04:25:14,591 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) [2023-12-16 04:25:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2023-12-16 04:25:14,593 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 126 [2023-12-16 04:25:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:14,594 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2023-12-16 04:25:14,594 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) [2023-12-16 04:25:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2023-12-16 04:25:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 04:25:14,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:14,600 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] [2023-12-16 04:25:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:25:14,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:14,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2107448995, now seen corresponding path program 1 times [2023-12-16 04:25:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892415101] [2023-12-16 04:25:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:15,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:15,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892415101] [2023-12-16 04:25:15,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892415101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:15,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:15,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552892320] [2023-12-16 04:25:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:15,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:15,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:15,253 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) [2023-12-16 04:25:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:15,459 INFO L93 Difference]: Finished difference Result 234 states and 341 transitions. [2023-12-16 04:25:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:25:15,461 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 [2023-12-16 04:25:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:15,479 INFO L225 Difference]: With dead ends: 234 [2023-12-16 04:25:15,479 INFO L226 Difference]: Without dead ends: 150 [2023-12-16 04:25:15,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:25:15,480 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 [2023-12-16 04:25:15,481 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] [2023-12-16 04:25:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-16 04:25:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2023-12-16 04:25:15,521 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) [2023-12-16 04:25:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2023-12-16 04:25:15,523 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 126 [2023-12-16 04:25:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:15,523 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2023-12-16 04:25:15,523 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) [2023-12-16 04:25:15,523 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2023-12-16 04:25:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 04:25:15,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:15,545 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] [2023-12-16 04:25:15,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:25:15,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 113304289, now seen corresponding path program 1 times [2023-12-16 04:25:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:15,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114655365] [2023-12-16 04:25:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:16,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114655365] [2023-12-16 04:25:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114655365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:25:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941554247] [2023-12-16 04:25:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:25:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:25:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:25:16,667 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) [2023-12-16 04:25:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:17,296 INFO L93 Difference]: Finished difference Result 419 states and 612 transitions. [2023-12-16 04:25:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:25:17,299 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 [2023-12-16 04:25:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:17,307 INFO L225 Difference]: With dead ends: 419 [2023-12-16 04:25:17,307 INFO L226 Difference]: Without dead ends: 273 [2023-12-16 04:25:17,311 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 [2023-12-16 04:25:17,313 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 277 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:17,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 492 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:25:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-16 04:25:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 231. [2023-12-16 04:25:17,350 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) [2023-12-16 04:25:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 335 transitions. [2023-12-16 04:25:17,352 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 335 transitions. Word has length 126 [2023-12-16 04:25:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:17,352 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 335 transitions. [2023-12-16 04:25:17,352 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) [2023-12-16 04:25:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 335 transitions. [2023-12-16 04:25:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 04:25:17,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:17,354 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] [2023-12-16 04:25:17,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:25:17,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:17,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2121224922, now seen corresponding path program 1 times [2023-12-16 04:25:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:17,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675944099] [2023-12-16 04:25:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:17,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:17,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675944099] [2023-12-16 04:25:17,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675944099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:17,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:17,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:17,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243639288] [2023-12-16 04:25:17,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:17,482 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) [2023-12-16 04:25:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:17,656 INFO L93 Difference]: Finished difference Result 565 states and 819 transitions. [2023-12-16 04:25:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:25:17,656 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 [2023-12-16 04:25:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:17,660 INFO L225 Difference]: With dead ends: 565 [2023-12-16 04:25:17,660 INFO L226 Difference]: Without dead ends: 335 [2023-12-16 04:25:17,667 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 [2023-12-16 04:25:17,672 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 [2023-12-16 04:25:17,672 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] [2023-12-16 04:25:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-16 04:25:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2023-12-16 04:25:17,739 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) [2023-12-16 04:25:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 410 transitions. [2023-12-16 04:25:17,742 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 410 transitions. Word has length 128 [2023-12-16 04:25:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:17,743 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 410 transitions. [2023-12-16 04:25:17,743 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) [2023-12-16 04:25:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 410 transitions. [2023-12-16 04:25:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 04:25:17,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:17,745 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] [2023-12-16 04:25:17,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 04:25:17,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:17,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1597776678, now seen corresponding path program 1 times [2023-12-16 04:25:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142520317] [2023-12-16 04:25:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142520317] [2023-12-16 04:25:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142520317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:17,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:17,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247818075] [2023-12-16 04:25:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:17,897 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) [2023-12-16 04:25:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:18,002 INFO L93 Difference]: Finished difference Result 583 states and 832 transitions. [2023-12-16 04:25:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:18,002 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 [2023-12-16 04:25:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:18,004 INFO L225 Difference]: With dead ends: 583 [2023-12-16 04:25:18,004 INFO L226 Difference]: Without dead ends: 297 [2023-12-16 04:25:18,005 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 [2023-12-16 04:25:18,005 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 [2023-12-16 04:25:18,005 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] [2023-12-16 04:25:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-16 04:25:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2023-12-16 04:25:18,018 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) [2023-12-16 04:25:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 412 transitions. [2023-12-16 04:25:18,019 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 412 transitions. Word has length 128 [2023-12-16 04:25:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:18,019 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 412 transitions. [2023-12-16 04:25:18,020 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) [2023-12-16 04:25:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 412 transitions. [2023-12-16 04:25:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 04:25:18,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:18,021 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] [2023-12-16 04:25:18,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:25:18,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:18,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2108650929, now seen corresponding path program 1 times [2023-12-16 04:25:18,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:18,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105275059] [2023-12-16 04:25:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:18,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105275059] [2023-12-16 04:25:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105275059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:18,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045890067] [2023-12-16 04:25:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:18,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:18,302 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) [2023-12-16 04:25:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:18,476 INFO L93 Difference]: Finished difference Result 715 states and 1002 transitions. [2023-12-16 04:25:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:25:18,477 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 [2023-12-16 04:25:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:18,480 INFO L225 Difference]: With dead ends: 715 [2023-12-16 04:25:18,480 INFO L226 Difference]: Without dead ends: 425 [2023-12-16 04:25:18,480 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 [2023-12-16 04:25:18,481 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 152 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:18,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 490 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:25:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-16 04:25:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 207. [2023-12-16 04:25:18,495 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) [2023-12-16 04:25:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 287 transitions. [2023-12-16 04:25:18,496 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 287 transitions. Word has length 129 [2023-12-16 04:25:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 287 transitions. [2023-12-16 04:25:18,497 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) [2023-12-16 04:25:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 287 transitions. [2023-12-16 04:25:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:18,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:18,498 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] [2023-12-16 04:25:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:25:18,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:18,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1472401365, now seen corresponding path program 1 times [2023-12-16 04:25:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669507280] [2023-12-16 04:25:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:18,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:18,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669507280] [2023-12-16 04:25:18,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669507280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:18,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:25:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948237986] [2023-12-16 04:25:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:25:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:25:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:25:18,971 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) [2023-12-16 04:25:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:19,390 INFO L93 Difference]: Finished difference Result 476 states and 663 transitions. [2023-12-16 04:25:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:25:19,390 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 [2023-12-16 04:25:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:19,392 INFO L225 Difference]: With dead ends: 476 [2023-12-16 04:25:19,392 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 04:25:19,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:25:19,393 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 161 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:19,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 934 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:25:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 04:25:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2023-12-16 04:25:19,421 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) [2023-12-16 04:25:19,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2023-12-16 04:25:19,422 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 130 [2023-12-16 04:25:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:19,432 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2023-12-16 04:25:19,432 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) [2023-12-16 04:25:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2023-12-16 04:25:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:19,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:19,434 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] [2023-12-16 04:25:19,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 04:25:19,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:19,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -771336787, now seen corresponding path program 1 times [2023-12-16 04:25:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:19,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315554351] [2023-12-16 04:25:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:19,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315554351] [2023-12-16 04:25:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315554351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:19,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:25:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160172427] [2023-12-16 04:25:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:19,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:25:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:19,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:25:19,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:25:19,837 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) [2023-12-16 04:25:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:19,968 INFO L93 Difference]: Finished difference Result 501 states and 693 transitions. [2023-12-16 04:25:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:25:19,968 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 [2023-12-16 04:25:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:19,969 INFO L225 Difference]: With dead ends: 501 [2023-12-16 04:25:19,969 INFO L226 Difference]: Without dead ends: 278 [2023-12-16 04:25:19,970 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 [2023-12-16 04:25:19,971 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 [2023-12-16 04:25:19,983 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] [2023-12-16 04:25:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-16 04:25:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 253. [2023-12-16 04:25:20,001 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) [2023-12-16 04:25:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 349 transitions. [2023-12-16 04:25:20,002 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 349 transitions. Word has length 130 [2023-12-16 04:25:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:20,002 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 349 transitions. [2023-12-16 04:25:20,002 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) [2023-12-16 04:25:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 349 transitions. [2023-12-16 04:25:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:20,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:20,003 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] [2023-12-16 04:25:20,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 04:25:20,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:20,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1133622189, now seen corresponding path program 1 times [2023-12-16 04:25:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486719574] [2023-12-16 04:25:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486719574] [2023-12-16 04:25:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486719574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:20,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:25:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969957032] [2023-12-16 04:25:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:25:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:25:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:25:20,225 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) [2023-12-16 04:25:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:20,350 INFO L93 Difference]: Finished difference Result 512 states and 702 transitions. [2023-12-16 04:25:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:25:20,356 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 [2023-12-16 04:25:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:20,357 INFO L225 Difference]: With dead ends: 512 [2023-12-16 04:25:20,357 INFO L226 Difference]: Without dead ends: 260 [2023-12-16 04:25:20,358 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 [2023-12-16 04:25:20,359 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 [2023-12-16 04:25:20,360 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] [2023-12-16 04:25:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-16 04:25:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 228. [2023-12-16 04:25:20,377 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) [2023-12-16 04:25:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 310 transitions. [2023-12-16 04:25:20,378 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 310 transitions. Word has length 130 [2023-12-16 04:25:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:20,379 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 310 transitions. [2023-12-16 04:25:20,379 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) [2023-12-16 04:25:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 310 transitions. [2023-12-16 04:25:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:20,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:20,380 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] [2023-12-16 04:25:20,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 04:25:20,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:20,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1834686767, now seen corresponding path program 1 times [2023-12-16 04:25:20,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:20,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149811527] [2023-12-16 04:25:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149811527] [2023-12-16 04:25:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149811527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:25:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474528135] [2023-12-16 04:25:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:25:20,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:25:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:25:20,749 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) [2023-12-16 04:25:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:20,911 INFO L93 Difference]: Finished difference Result 479 states and 653 transitions. [2023-12-16 04:25:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:25:20,912 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 [2023-12-16 04:25:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:20,913 INFO L225 Difference]: With dead ends: 479 [2023-12-16 04:25:20,913 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 04:25:20,914 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 [2023-12-16 04:25:20,914 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 [2023-12-16 04:25:20,915 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] [2023-12-16 04:25:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 04:25:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 225. [2023-12-16 04:25:20,927 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) [2023-12-16 04:25:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 306 transitions. [2023-12-16 04:25:20,927 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 306 transitions. Word has length 130 [2023-12-16 04:25:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:20,930 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 306 transitions. [2023-12-16 04:25:20,930 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) [2023-12-16 04:25:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 306 transitions. [2023-12-16 04:25:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:20,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:20,931 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] [2023-12-16 04:25:20,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 04:25:20,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:20,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:20,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1121698273, now seen corresponding path program 1 times [2023-12-16 04:25:20,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:20,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115947337] [2023-12-16 04:25:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:20,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115947337] [2023-12-16 04:25:21,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115947337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:21,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:21,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518987608] [2023-12-16 04:25:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:21,143 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) [2023-12-16 04:25:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:21,231 INFO L93 Difference]: Finished difference Result 650 states and 886 transitions. [2023-12-16 04:25:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:21,231 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 [2023-12-16 04:25:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:21,233 INFO L225 Difference]: With dead ends: 650 [2023-12-16 04:25:21,233 INFO L226 Difference]: Without dead ends: 426 [2023-12-16 04:25:21,234 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 [2023-12-16 04:25:21,234 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:21,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 382 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:25:21,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-16 04:25:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 266. [2023-12-16 04:25:21,250 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) [2023-12-16 04:25:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 356 transitions. [2023-12-16 04:25:21,251 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 356 transitions. Word has length 130 [2023-12-16 04:25:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:21,251 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 356 transitions. [2023-12-16 04:25:21,251 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) [2023-12-16 04:25:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 356 transitions. [2023-12-16 04:25:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:21,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:21,252 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] [2023-12-16 04:25:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 04:25:21,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:21,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1514725283, now seen corresponding path program 1 times [2023-12-16 04:25:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:21,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367853170] [2023-12-16 04:25:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:21,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367853170] [2023-12-16 04:25:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367853170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:21,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:21,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:25:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325598526] [2023-12-16 04:25:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:21,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:25:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:21,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:25:21,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:25:21,709 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) [2023-12-16 04:25:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:21,878 INFO L93 Difference]: Finished difference Result 672 states and 903 transitions. [2023-12-16 04:25:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:25:21,879 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 [2023-12-16 04:25:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:21,880 INFO L225 Difference]: With dead ends: 672 [2023-12-16 04:25:21,881 INFO L226 Difference]: Without dead ends: 407 [2023-12-16 04:25:21,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:25:21,882 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 [2023-12-16 04:25:21,882 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] [2023-12-16 04:25:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-16 04:25:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 321. [2023-12-16 04:25:21,896 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) [2023-12-16 04:25:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 427 transitions. [2023-12-16 04:25:21,897 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 427 transitions. Word has length 130 [2023-12-16 04:25:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:21,897 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 427 transitions. [2023-12-16 04:25:21,897 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) [2023-12-16 04:25:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 427 transitions. [2023-12-16 04:25:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:25:21,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:21,898 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] [2023-12-16 04:25:21,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 04:25:21,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:21,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1374176673, now seen corresponding path program 1 times [2023-12-16 04:25:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:21,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707476174] [2023-12-16 04:25:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707476174] [2023-12-16 04:25:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707476174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:22,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358553010] [2023-12-16 04:25:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:22,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:22,081 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) [2023-12-16 04:25:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:22,163 INFO L93 Difference]: Finished difference Result 775 states and 1028 transitions. [2023-12-16 04:25:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:22,163 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 [2023-12-16 04:25:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:22,165 INFO L225 Difference]: With dead ends: 775 [2023-12-16 04:25:22,165 INFO L226 Difference]: Without dead ends: 455 [2023-12-16 04:25:22,166 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 [2023-12-16 04:25:22,166 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:22,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 534 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:25:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-16 04:25:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 417. [2023-12-16 04:25:22,194 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) [2023-12-16 04:25:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 549 transitions. [2023-12-16 04:25:22,196 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 549 transitions. Word has length 130 [2023-12-16 04:25:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:22,196 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 549 transitions. [2023-12-16 04:25:22,196 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) [2023-12-16 04:25:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 549 transitions. [2023-12-16 04:25:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:22,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:22,197 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] [2023-12-16 04:25:22,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 04:25:22,198 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:22,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1341429018, now seen corresponding path program 1 times [2023-12-16 04:25:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896137004] [2023-12-16 04:25:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:22,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:22,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:22,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896137004] [2023-12-16 04:25:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896137004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:22,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637193064] [2023-12-16 04:25:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:22,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:22,346 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) [2023-12-16 04:25:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:22,470 INFO L93 Difference]: Finished difference Result 1185 states and 1559 transitions. [2023-12-16 04:25:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:25:22,470 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 [2023-12-16 04:25:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:22,473 INFO L225 Difference]: With dead ends: 1185 [2023-12-16 04:25:22,473 INFO L226 Difference]: Without dead ends: 769 [2023-12-16 04:25:22,474 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 [2023-12-16 04:25:22,474 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 [2023-12-16 04:25:22,474 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] [2023-12-16 04:25:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-12-16 04:25:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 687. [2023-12-16 04:25:22,523 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) [2023-12-16 04:25:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 894 transitions. [2023-12-16 04:25:22,525 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 894 transitions. Word has length 134 [2023-12-16 04:25:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:22,525 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 894 transitions. [2023-12-16 04:25:22,525 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) [2023-12-16 04:25:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 894 transitions. [2023-12-16 04:25:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:22,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:22,527 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] [2023-12-16 04:25:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 04:25:22,527 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:22,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2144191652, now seen corresponding path program 1 times [2023-12-16 04:25:22,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:22,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418145450] [2023-12-16 04:25:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:22,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:22,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:22,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418145450] [2023-12-16 04:25:22,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418145450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:22,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:22,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:25:22,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611634976] [2023-12-16 04:25:22,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:22,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:25:22,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:25:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:25:22,995 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) [2023-12-16 04:25:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:23,245 INFO L93 Difference]: Finished difference Result 1420 states and 1850 transitions. [2023-12-16 04:25:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:25:23,246 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 [2023-12-16 04:25:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:23,248 INFO L225 Difference]: With dead ends: 1420 [2023-12-16 04:25:23,249 INFO L226 Difference]: Without dead ends: 734 [2023-12-16 04:25:23,252 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 [2023-12-16 04:25:23,252 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 [2023-12-16 04:25:23,252 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] [2023-12-16 04:25:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-16 04:25:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 699. [2023-12-16 04:25:23,292 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) [2023-12-16 04:25:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 906 transitions. [2023-12-16 04:25:23,294 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 906 transitions. Word has length 134 [2023-12-16 04:25:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 906 transitions. [2023-12-16 04:25:23,294 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) [2023-12-16 04:25:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 906 transitions. [2023-12-16 04:25:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:23,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:23,296 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] [2023-12-16 04:25:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 04:25:23,297 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:23,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1769339663, now seen corresponding path program 1 times [2023-12-16 04:25:23,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:23,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65442106] [2023-12-16 04:25:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65442106] [2023-12-16 04:25:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65442106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763720421] [2023-12-16 04:25:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:23,545 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) [2023-12-16 04:25:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:23,747 INFO L93 Difference]: Finished difference Result 1667 states and 2174 transitions. [2023-12-16 04:25:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:23,760 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 [2023-12-16 04:25:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:23,763 INFO L225 Difference]: With dead ends: 1667 [2023-12-16 04:25:23,763 INFO L226 Difference]: Without dead ends: 969 [2023-12-16 04:25:23,765 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 [2023-12-16 04:25:23,765 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 98 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:23,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 477 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:25:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-12-16 04:25:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 723. [2023-12-16 04:25:23,919 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) [2023-12-16 04:25:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 934 transitions. [2023-12-16 04:25:23,921 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 934 transitions. Word has length 134 [2023-12-16 04:25:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:23,922 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 934 transitions. [2023-12-16 04:25:23,922 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) [2023-12-16 04:25:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 934 transitions. [2023-12-16 04:25:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:23,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:23,924 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] [2023-12-16 04:25:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 04:25:23,924 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:23,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash 959993037, now seen corresponding path program 1 times [2023-12-16 04:25:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:23,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214015040] [2023-12-16 04:25:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:23,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214015040] [2023-12-16 04:25:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214015040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:24,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:25:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617853717] [2023-12-16 04:25:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:24,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:25:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:25:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:25:24,187 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) [2023-12-16 04:25:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:24,320 INFO L93 Difference]: Finished difference Result 1515 states and 1967 transitions. [2023-12-16 04:25:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:25:24,321 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 [2023-12-16 04:25:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:24,323 INFO L225 Difference]: With dead ends: 1515 [2023-12-16 04:25:24,323 INFO L226 Difference]: Without dead ends: 793 [2023-12-16 04:25:24,324 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 [2023-12-16 04:25:24,324 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:24,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 563 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:25:24,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-16 04:25:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 733. [2023-12-16 04:25:24,361 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) [2023-12-16 04:25:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2023-12-16 04:25:24,363 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 134 [2023-12-16 04:25:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:24,363 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2023-12-16 04:25:24,363 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) [2023-12-16 04:25:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2023-12-16 04:25:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:24,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:24,365 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] [2023-12-16 04:25:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 04:25:24,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:24,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1403468632, now seen corresponding path program 1 times [2023-12-16 04:25:24,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:24,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901422479] [2023-12-16 04:25:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:24,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901422479] [2023-12-16 04:25:24,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901422479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:24,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:24,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 04:25:24,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927499580] [2023-12-16 04:25:24,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:24,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:25:24,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:25:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:25:24,667 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) [2023-12-16 04:25:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:24,959 INFO L93 Difference]: Finished difference Result 1727 states and 2217 transitions. [2023-12-16 04:25:24,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:25:24,959 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 [2023-12-16 04:25:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:24,962 INFO L225 Difference]: With dead ends: 1727 [2023-12-16 04:25:24,962 INFO L226 Difference]: Without dead ends: 995 [2023-12-16 04:25:24,963 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 [2023-12-16 04:25:24,964 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 181 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-16 04:25:24,964 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] [2023-12-16 04:25:24,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-12-16 04:25:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 743. [2023-12-16 04:25:25,002 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) [2023-12-16 04:25:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 953 transitions. [2023-12-16 04:25:25,004 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 953 transitions. Word has length 134 [2023-12-16 04:25:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:25,005 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 953 transitions. [2023-12-16 04:25:25,005 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) [2023-12-16 04:25:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 953 transitions. [2023-12-16 04:25:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:25,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:25,006 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] [2023-12-16 04:25:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 04:25:25,006 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:25,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash -980766806, now seen corresponding path program 1 times [2023-12-16 04:25:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162486317] [2023-12-16 04:25:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-16 04:25:25,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162486317] [2023-12-16 04:25:25,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162486317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:25:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008827204] [2023-12-16 04:25:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:25,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:25,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:25,308 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) [2023-12-16 04:25:25,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:25:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:25,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 04:25:25,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:25,580 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 [2023-12-16 04:25:25,627 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 [2023-12-16 04:25:25,631 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 [2023-12-16 04:25:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-16 04:25:25,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:25:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:25,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008827204] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:25:25,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:25:25,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 12] total 19 [2023-12-16 04:25:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401619709] [2023-12-16 04:25:25,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:25,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:25:25,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:25,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:25:25,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:25:25,820 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) [2023-12-16 04:25:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:26,153 INFO L93 Difference]: Finished difference Result 1805 states and 2323 transitions. [2023-12-16 04:25:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:25:26,154 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 [2023-12-16 04:25:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:26,157 INFO L225 Difference]: With dead ends: 1805 [2023-12-16 04:25:26,157 INFO L226 Difference]: Without dead ends: 1063 [2023-12-16 04:25:26,158 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 [2023-12-16 04:25:26,158 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:26,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1233 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:25:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-16 04:25:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 887. [2023-12-16 04:25:26,199 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) [2023-12-16 04:25:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1140 transitions. [2023-12-16 04:25:26,202 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1140 transitions. Word has length 134 [2023-12-16 04:25:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:26,202 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1140 transitions. [2023-12-16 04:25:26,202 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) [2023-12-16 04:25:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1140 transitions. [2023-12-16 04:25:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:26,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:26,204 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] [2023-12-16 04:25:26,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:26,410 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 [2023-12-16 04:25:26,411 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:26,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1790113432, now seen corresponding path program 1 times [2023-12-16 04:25:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:26,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566361878] [2023-12-16 04:25:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566361878] [2023-12-16 04:25:26,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566361878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:26,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:26,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:26,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161193552] [2023-12-16 04:25:26,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:26,578 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) [2023-12-16 04:25:26,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:26,756 INFO L93 Difference]: Finished difference Result 1941 states and 2486 transitions. [2023-12-16 04:25:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:26,763 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 [2023-12-16 04:25:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:26,766 INFO L225 Difference]: With dead ends: 1941 [2023-12-16 04:25:26,766 INFO L226 Difference]: Without dead ends: 1055 [2023-12-16 04:25:26,767 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 [2023-12-16 04:25:26,780 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 [2023-12-16 04:25:26,780 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] [2023-12-16 04:25:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-12-16 04:25:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 883. [2023-12-16 04:25:26,856 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) [2023-12-16 04:25:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1132 transitions. [2023-12-16 04:25:26,858 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1132 transitions. Word has length 134 [2023-12-16 04:25:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:26,858 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1132 transitions. [2023-12-16 04:25:26,858 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) [2023-12-16 04:25:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1132 transitions. [2023-12-16 04:25:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:26,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:26,860 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] [2023-12-16 04:25:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 04:25:26,860 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:26,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2121307972, now seen corresponding path program 1 times [2023-12-16 04:25:26,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:26,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38457843] [2023-12-16 04:25:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:26,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939764412] [2023-12-16 04:25:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:26,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:26,920 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) [2023-12-16 04:25:27,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:25:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:27,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:25:27,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:27,421 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 [2023-12-16 04:25:27,424 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 [2023-12-16 04:25:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:27,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:27,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38457843] [2023-12-16 04:25:27,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939764412] [2023-12-16 04:25:27,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939764412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:27,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:27,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147154216] [2023-12-16 04:25:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:27,433 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) [2023-12-16 04:25:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:27,562 INFO L93 Difference]: Finished difference Result 1841 states and 2350 transitions. [2023-12-16 04:25:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:27,563 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 [2023-12-16 04:25:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:27,565 INFO L225 Difference]: With dead ends: 1841 [2023-12-16 04:25:27,565 INFO L226 Difference]: Without dead ends: 959 [2023-12-16 04:25:27,566 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 [2023-12-16 04:25:27,567 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 [2023-12-16 04:25:27,567 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] [2023-12-16 04:25:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-16 04:25:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 917. [2023-12-16 04:25:27,610 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) [2023-12-16 04:25:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1160 transitions. [2023-12-16 04:25:27,612 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1160 transitions. Word has length 134 [2023-12-16 04:25:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:27,612 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1160 transitions. [2023-12-16 04:25:27,612 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) [2023-12-16 04:25:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1160 transitions. [2023-12-16 04:25:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:25:27,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:27,613 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] [2023-12-16 04:25:27,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:27,819 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 [2023-12-16 04:25:27,820 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:27,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 937109357, now seen corresponding path program 1 times [2023-12-16 04:25:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363098634] [2023-12-16 04:25:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:27,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95144249] [2023-12-16 04:25:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:27,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:27,874 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) [2023-12-16 04:25:27,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:25:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:28,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 04:25:28,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:28,152 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 [2023-12-16 04:25:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:28,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:28,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363098634] [2023-12-16 04:25:28,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95144249] [2023-12-16 04:25:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95144249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:28,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:28,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:25:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773314765] [2023-12-16 04:25:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:28,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:25:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:28,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:25:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:25:28,202 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) [2023-12-16 04:25:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:28,525 INFO L93 Difference]: Finished difference Result 1986 states and 2518 transitions. [2023-12-16 04:25:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:25:28,526 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 [2023-12-16 04:25:28,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:28,535 INFO L225 Difference]: With dead ends: 1986 [2023-12-16 04:25:28,535 INFO L226 Difference]: Without dead ends: 1086 [2023-12-16 04:25:28,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:25:28,538 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 102 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-16 04:25:28,538 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] [2023-12-16 04:25:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-12-16 04:25:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 962. [2023-12-16 04:25:28,629 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) [2023-12-16 04:25:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1218 transitions. [2023-12-16 04:25:28,631 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1218 transitions. Word has length 134 [2023-12-16 04:25:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:28,631 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1218 transitions. [2023-12-16 04:25:28,632 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) [2023-12-16 04:25:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1218 transitions. [2023-12-16 04:25:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 04:25:28,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:28,633 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] [2023-12-16 04:25:28,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:28,854 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 [2023-12-16 04:25:28,854 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:28,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1543955261, now seen corresponding path program 1 times [2023-12-16 04:25:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80411481] [2023-12-16 04:25:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:28,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462179303] [2023-12-16 04:25:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:28,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:28,875 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) [2023-12-16 04:25:28,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:25:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:29,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:25:29,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:29,161 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 [2023-12-16 04:25:29,189 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 [2023-12-16 04:25:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:29,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80411481] [2023-12-16 04:25:29,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462179303] [2023-12-16 04:25:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462179303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:29,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:29,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:29,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089600144] [2023-12-16 04:25:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:29,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:29,199 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) [2023-12-16 04:25:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:29,405 INFO L93 Difference]: Finished difference Result 1911 states and 2412 transitions. [2023-12-16 04:25:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:25:29,420 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 [2023-12-16 04:25:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:29,424 INFO L225 Difference]: With dead ends: 1911 [2023-12-16 04:25:29,424 INFO L226 Difference]: Without dead ends: 966 [2023-12-16 04:25:29,425 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 [2023-12-16 04:25:29,425 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 [2023-12-16 04:25:29,426 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] [2023-12-16 04:25:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-16 04:25:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 940. [2023-12-16 04:25:29,547 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) [2023-12-16 04:25:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1172 transitions. [2023-12-16 04:25:29,549 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1172 transitions. Word has length 135 [2023-12-16 04:25:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:29,549 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1172 transitions. [2023-12-16 04:25:29,549 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) [2023-12-16 04:25:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1172 transitions. [2023-12-16 04:25:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 04:25:29,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:29,551 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] [2023-12-16 04:25:29,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:29,757 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 [2023-12-16 04:25:29,758 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:29,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1703438152, now seen corresponding path program 1 times [2023-12-16 04:25:29,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:29,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376808108] [2023-12-16 04:25:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:29,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:25:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:25:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:25:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:25:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:25:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:25:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:25:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:25:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:25:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:25:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:25:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 04:25:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 04:25:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:25:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 04:25:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 04:25:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376808108] [2023-12-16 04:25:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376808108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:30,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:30,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:25:30,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887089214] [2023-12-16 04:25:30,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:30,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:25:30,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:25:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:25:30,480 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) [2023-12-16 04:25:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:30,797 INFO L93 Difference]: Finished difference Result 1484 states and 1804 transitions. [2023-12-16 04:25:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:25:30,797 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 [2023-12-16 04:25:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:30,801 INFO L225 Difference]: With dead ends: 1484 [2023-12-16 04:25:30,801 INFO L226 Difference]: Without dead ends: 1482 [2023-12-16 04:25:30,801 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 [2023-12-16 04:25:30,802 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 182 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-16 04:25:30,803 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] [2023-12-16 04:25:30,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-12-16 04:25:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1478. [2023-12-16 04:25:30,903 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) [2023-12-16 04:25:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1792 transitions. [2023-12-16 04:25:30,906 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1792 transitions. Word has length 136 [2023-12-16 04:25:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:30,907 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1792 transitions. [2023-12-16 04:25:30,907 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) [2023-12-16 04:25:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1792 transitions. [2023-12-16 04:25:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 04:25:30,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:30,908 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] [2023-12-16 04:25:30,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 04:25:30,909 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:30,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2068353727, now seen corresponding path program 1 times [2023-12-16 04:25:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651174429] [2023-12-16 04:25:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:30,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:30,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142262696] [2023-12-16 04:25:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:30,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:30,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:30,926 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) [2023-12-16 04:25:30,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:25:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:31,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:25:31,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:31,190 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 [2023-12-16 04:25:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:31,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:31,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651174429] [2023-12-16 04:25:31,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:31,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142262696] [2023-12-16 04:25:31,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142262696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:31,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:31,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:31,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902186758] [2023-12-16 04:25:31,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:31,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:31,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:31,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:31,198 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) [2023-12-16 04:25:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:31,362 INFO L93 Difference]: Finished difference Result 3075 states and 3720 transitions. [2023-12-16 04:25:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:25:31,363 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 [2023-12-16 04:25:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:31,367 INFO L225 Difference]: With dead ends: 3075 [2023-12-16 04:25:31,367 INFO L226 Difference]: Without dead ends: 1614 [2023-12-16 04:25:31,369 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 [2023-12-16 04:25:31,369 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 70 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-12-16 04:25:31,372 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] [2023-12-16 04:25:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-12-16 04:25:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1460. [2023-12-16 04:25:31,482 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) [2023-12-16 04:25:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1760 transitions. [2023-12-16 04:25:31,486 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1760 transitions. Word has length 136 [2023-12-16 04:25:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:31,486 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 1760 transitions. [2023-12-16 04:25:31,487 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) [2023-12-16 04:25:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1760 transitions. [2023-12-16 04:25:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-16 04:25:31,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:31,488 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] [2023-12-16 04:25:31,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:31,694 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 [2023-12-16 04:25:31,695 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:31,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash -347971290, now seen corresponding path program 1 times [2023-12-16 04:25:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:31,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894475874] [2023-12-16 04:25:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:31,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:31,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559901087] [2023-12-16 04:25:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:31,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:31,749 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) [2023-12-16 04:25:31,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:25:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:32,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:25:32,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:32,114 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 [2023-12-16 04:25:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:32,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:32,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894475874] [2023-12-16 04:25:32,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:32,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559901087] [2023-12-16 04:25:32,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559901087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:32,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:32,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236761806] [2023-12-16 04:25:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:32,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:32,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:32,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:32,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:32,122 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) [2023-12-16 04:25:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:32,288 INFO L93 Difference]: Finished difference Result 2554 states and 3091 transitions. [2023-12-16 04:25:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:25:32,289 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 [2023-12-16 04:25:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:32,292 INFO L225 Difference]: With dead ends: 2554 [2023-12-16 04:25:32,292 INFO L226 Difference]: Without dead ends: 1111 [2023-12-16 04:25:32,294 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 [2023-12-16 04:25:32,294 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 [2023-12-16 04:25:32,295 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] [2023-12-16 04:25:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-12-16 04:25:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1076. [2023-12-16 04:25:32,387 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) [2023-12-16 04:25:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1294 transitions. [2023-12-16 04:25:32,390 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1294 transitions. Word has length 137 [2023-12-16 04:25:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:32,390 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1294 transitions. [2023-12-16 04:25:32,391 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) [2023-12-16 04:25:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1294 transitions. [2023-12-16 04:25:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 04:25:32,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:32,392 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] [2023-12-16 04:25:32,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:32,598 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 [2023-12-16 04:25:32,599 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:32,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash 826294347, now seen corresponding path program 1 times [2023-12-16 04:25:32,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:32,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908319674] [2023-12-16 04:25:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:32,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447380558] [2023-12-16 04:25:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:32,635 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) [2023-12-16 04:25:32,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:25:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:32,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:25:32,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:32,870 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 [2023-12-16 04:25:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:32,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908319674] [2023-12-16 04:25:32,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447380558] [2023-12-16 04:25:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447380558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359962620] [2023-12-16 04:25:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:32,878 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) [2023-12-16 04:25:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:33,004 INFO L93 Difference]: Finished difference Result 2129 states and 2553 transitions. [2023-12-16 04:25:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:33,005 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 [2023-12-16 04:25:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:33,007 INFO L225 Difference]: With dead ends: 2129 [2023-12-16 04:25:33,008 INFO L226 Difference]: Without dead ends: 1054 [2023-12-16 04:25:33,009 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 [2023-12-16 04:25:33,010 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 [2023-12-16 04:25:33,010 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] [2023-12-16 04:25:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-16 04:25:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1015. [2023-12-16 04:25:33,073 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) [2023-12-16 04:25:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1215 transitions. [2023-12-16 04:25:33,075 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1215 transitions. Word has length 138 [2023-12-16 04:25:33,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:33,075 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1215 transitions. [2023-12-16 04:25:33,075 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) [2023-12-16 04:25:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1215 transitions. [2023-12-16 04:25:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:33,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:33,076 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] [2023-12-16 04:25:33,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:33,283 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 [2023-12-16 04:25:33,283 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:33,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash 336233147, now seen corresponding path program 1 times [2023-12-16 04:25:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298734515] [2023-12-16 04:25:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:33,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:33,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385678891] [2023-12-16 04:25:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:33,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:33,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:33,314 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) [2023-12-16 04:25:33,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:25:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:33,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:25:33,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:33,568 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 [2023-12-16 04:25:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:33,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:33,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298734515] [2023-12-16 04:25:33,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385678891] [2023-12-16 04:25:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385678891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036787920] [2023-12-16 04:25:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:33,577 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) [2023-12-16 04:25:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:33,718 INFO L93 Difference]: Finished difference Result 2014 states and 2394 transitions. [2023-12-16 04:25:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:25:33,719 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 [2023-12-16 04:25:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:33,722 INFO L225 Difference]: With dead ends: 2014 [2023-12-16 04:25:33,722 INFO L226 Difference]: Without dead ends: 1000 [2023-12-16 04:25:33,723 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 [2023-12-16 04:25:33,724 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 54 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-16 04:25:33,724 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] [2023-12-16 04:25:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-16 04:25:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 967. [2023-12-16 04:25:33,786 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) [2023-12-16 04:25:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1135 transitions. [2023-12-16 04:25:33,788 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1135 transitions. Word has length 139 [2023-12-16 04:25:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:33,788 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1135 transitions. [2023-12-16 04:25:33,788 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) [2023-12-16 04:25:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1135 transitions. [2023-12-16 04:25:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:33,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:33,789 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] [2023-12-16 04:25:33,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:33,996 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 [2023-12-16 04:25:33,996 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:33,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -301435502, now seen corresponding path program 1 times [2023-12-16 04:25:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473138824] [2023-12-16 04:25:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:34,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273849558] [2023-12-16 04:25:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:34,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:34,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:34,013 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) [2023-12-16 04:25:34,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:25:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:34,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 04:25:34,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:34,416 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 [2023-12-16 04:25:34,466 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 [2023-12-16 04:25:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-16 04:25:34,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:25:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473138824] [2023-12-16 04:25:34,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273849558] [2023-12-16 04:25:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273849558] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:25:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:25:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-16 04:25:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579169256] [2023-12-16 04:25:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:25:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:25:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:25:34,617 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) [2023-12-16 04:25:34,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:34,841 INFO L93 Difference]: Finished difference Result 1246 states and 1464 transitions. [2023-12-16 04:25:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:25:34,841 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 [2023-12-16 04:25:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:34,844 INFO L225 Difference]: With dead ends: 1246 [2023-12-16 04:25:34,844 INFO L226 Difference]: Without dead ends: 1244 [2023-12-16 04:25:34,845 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 [2023-12-16 04:25:34,846 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 [2023-12-16 04:25:34,846 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] [2023-12-16 04:25:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-12-16 04:25:34,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1240. [2023-12-16 04:25:34,971 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) [2023-12-16 04:25:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1456 transitions. [2023-12-16 04:25:34,973 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1456 transitions. Word has length 139 [2023-12-16 04:25:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:34,973 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1456 transitions. [2023-12-16 04:25:34,974 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) [2023-12-16 04:25:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1456 transitions. [2023-12-16 04:25:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:34,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:34,975 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] [2023-12-16 04:25:35,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:35,183 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 [2023-12-16 04:25:35,183 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash -244177200, now seen corresponding path program 1 times [2023-12-16 04:25:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:35,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783561263] [2023-12-16 04:25:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:35,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:35,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206105067] [2023-12-16 04:25:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:35,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:35,232 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) [2023-12-16 04:25:35,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:25:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:35,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 04:25:35,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:36,389 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 [2023-12-16 04:25:36,911 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 [2023-12-16 04:25:36,914 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 [2023-12-16 04:25:37,012 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 [2023-12-16 04:25:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:25:37,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:25:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:37,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783561263] [2023-12-16 04:25:37,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206105067] [2023-12-16 04:25:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206105067] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:25:37,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:25:37,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-16 04:25:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169849477] [2023-12-16 04:25:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:37,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:25:37,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:37,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:25:37,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:25:37,850 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) [2023-12-16 04:25:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:41,480 INFO L93 Difference]: Finished difference Result 2756 states and 3228 transitions. [2023-12-16 04:25:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:25:41,481 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 [2023-12-16 04:25:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:41,485 INFO L225 Difference]: With dead ends: 2756 [2023-12-16 04:25:41,485 INFO L226 Difference]: Without dead ends: 1517 [2023-12-16 04:25:41,487 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 [2023-12-16 04:25:41,487 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 53 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 686 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 04:25:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2023-12-16 04:25:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1362. [2023-12-16 04:25:41,573 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) [2023-12-16 04:25:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1602 transitions. [2023-12-16 04:25:41,575 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1602 transitions. Word has length 139 [2023-12-16 04:25:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:41,575 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1602 transitions. [2023-12-16 04:25:41,575 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) [2023-12-16 04:25:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1602 transitions. [2023-12-16 04:25:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:41,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:41,577 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] [2023-12-16 04:25:41,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:41,792 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 [2023-12-16 04:25:41,792 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:41,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1530830162, now seen corresponding path program 1 times [2023-12-16 04:25:41,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:41,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315179298] [2023-12-16 04:25:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:41,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:41,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464533502] [2023-12-16 04:25:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:41,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:41,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:41,852 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) [2023-12-16 04:25:41,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:25:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:42,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:25:42,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:42,221 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 [2023-12-16 04:25:42,236 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 [2023-12-16 04:25:42,246 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 [2023-12-16 04:25:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:42,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315179298] [2023-12-16 04:25:42,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464533502] [2023-12-16 04:25:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464533502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:42,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924199191] [2023-12-16 04:25:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:42,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:42,253 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) [2023-12-16 04:25:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:42,546 INFO L93 Difference]: Finished difference Result 3295 states and 3827 transitions. [2023-12-16 04:25:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:25:42,547 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 [2023-12-16 04:25:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:42,551 INFO L225 Difference]: With dead ends: 3295 [2023-12-16 04:25:42,551 INFO L226 Difference]: Without dead ends: 1934 [2023-12-16 04:25:42,560 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 [2023-12-16 04:25:42,561 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-16 04:25:42,561 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] [2023-12-16 04:25:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2023-12-16 04:25:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1456. [2023-12-16 04:25:42,750 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) [2023-12-16 04:25:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1704 transitions. [2023-12-16 04:25:42,753 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1704 transitions. Word has length 139 [2023-12-16 04:25:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:42,753 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1704 transitions. [2023-12-16 04:25:42,753 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) [2023-12-16 04:25:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1704 transitions. [2023-12-16 04:25:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:42,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:42,755 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] [2023-12-16 04:25:42,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:42,961 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 [2023-12-16 04:25:42,962 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:42,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -435449008, now seen corresponding path program 1 times [2023-12-16 04:25:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903000273] [2023-12-16 04:25:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:42,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10706921] [2023-12-16 04:25:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:42,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:42,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:42,992 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) [2023-12-16 04:25:43,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:25:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:43,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 04:25:43,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:43,917 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 [2023-12-16 04:25:45,167 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 43 treesize of output 35 [2023-12-16 04:25:45,170 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 [2023-12-16 04:25:45,488 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 [2023-12-16 04:25:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:25:45,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:25:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903000273] [2023-12-16 04:25:48,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10706921] [2023-12-16 04:25:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10706921] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:25:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:25:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-16 04:25:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331365463] [2023-12-16 04:25:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:48,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:25:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:25:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:25:48,560 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) [2023-12-16 04:25:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:53,561 INFO L93 Difference]: Finished difference Result 3033 states and 3540 transitions. [2023-12-16 04:25:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:25:53,562 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 [2023-12-16 04:25:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:53,566 INFO L225 Difference]: With dead ends: 3033 [2023-12-16 04:25:53,566 INFO L226 Difference]: Without dead ends: 1578 [2023-12-16 04:25:53,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:25:53,569 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 94 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:25:53,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 649 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-16 04:25:53,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-16 04:25:53,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1460. [2023-12-16 04:25:53,661 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) [2023-12-16 04:25:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1708 transitions. [2023-12-16 04:25:53,664 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1708 transitions. Word has length 139 [2023-12-16 04:25:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:53,665 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 1708 transitions. [2023-12-16 04:25:53,665 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) [2023-12-16 04:25:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1708 transitions. [2023-12-16 04:25:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:53,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:53,666 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] [2023-12-16 04:25:53,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:53,874 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 [2023-12-16 04:25:53,874 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:53,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash -378190706, now seen corresponding path program 1 times [2023-12-16 04:25:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824752097] [2023-12-16 04:25:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:53,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:53,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737059654] [2023-12-16 04:25:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:53,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:53,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:53,920 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) [2023-12-16 04:25:53,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:25:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:54,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:25:54,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:54,226 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 [2023-12-16 04:25:54,267 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 [2023-12-16 04:25:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:54,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824752097] [2023-12-16 04:25:54,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737059654] [2023-12-16 04:25:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737059654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:54,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:54,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:25:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247264329] [2023-12-16 04:25:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:54,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:25:54,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:54,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:25:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:25:54,307 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) [2023-12-16 04:25:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:54,600 INFO L93 Difference]: Finished difference Result 1534 states and 1790 transitions. [2023-12-16 04:25:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:25:54,611 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 [2023-12-16 04:25:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:54,630 INFO L225 Difference]: With dead ends: 1534 [2023-12-16 04:25:54,631 INFO L226 Difference]: Without dead ends: 1532 [2023-12-16 04:25:54,631 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 [2023-12-16 04:25:54,631 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 [2023-12-16 04:25:54,632 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] [2023-12-16 04:25:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-12-16 04:25:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1360. [2023-12-16 04:25:54,796 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) [2023-12-16 04:25:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1588 transitions. [2023-12-16 04:25:54,797 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1588 transitions. Word has length 139 [2023-12-16 04:25:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:54,798 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1588 transitions. [2023-12-16 04:25:54,798 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) [2023-12-16 04:25:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1588 transitions. [2023-12-16 04:25:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:54,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:54,799 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] [2023-12-16 04:25:54,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:55,022 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 [2023-12-16 04:25:55,023 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:55,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1679050834, now seen corresponding path program 1 times [2023-12-16 04:25:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56172813] [2023-12-16 04:25:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:55,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84266319] [2023-12-16 04:25:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:55,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:55,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:55,053 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) [2023-12-16 04:25:55,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:25:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:55,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:25:55,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:55,472 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 [2023-12-16 04:25:55,478 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 [2023-12-16 04:25:55,480 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 [2023-12-16 04:25:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:25:55,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:25:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:25:55,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56172813] [2023-12-16 04:25:55,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:25:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84266319] [2023-12-16 04:25:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84266319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:25:55,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:25:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:25:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954600004] [2023-12-16 04:25:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:25:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:25:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:25:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:25:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:25:55,502 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) [2023-12-16 04:25:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:25:55,766 INFO L93 Difference]: Finished difference Result 3051 states and 3516 transitions. [2023-12-16 04:25:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:25:55,766 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 [2023-12-16 04:25:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:25:55,771 INFO L225 Difference]: With dead ends: 3051 [2023-12-16 04:25:55,771 INFO L226 Difference]: Without dead ends: 1732 [2023-12-16 04:25:55,775 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 [2023-12-16 04:25:55,776 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 [2023-12-16 04:25:55,777 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] [2023-12-16 04:25:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-16 04:25:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1360. [2023-12-16 04:25:56,109 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) [2023-12-16 04:25:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1580 transitions. [2023-12-16 04:25:56,127 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1580 transitions. Word has length 139 [2023-12-16 04:25:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:25:56,127 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1580 transitions. [2023-12-16 04:25:56,127 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) [2023-12-16 04:25:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1580 transitions. [2023-12-16 04:25:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:25:56,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:25:56,129 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] [2023-12-16 04:25:56,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:25:56,336 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 [2023-12-16 04:25:56,336 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:25:56,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:25:56,337 INFO L85 PathProgramCache]: Analyzing trace with hash -840909100, now seen corresponding path program 1 times [2023-12-16 04:25:56,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:25:56,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764987637] [2023-12-16 04:25:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:56,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:25:56,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:25:56,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636319830] [2023-12-16 04:25:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:25:56,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:25:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:25:56,353 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) [2023-12-16 04:25:56,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:25:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:25:56,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 04:25:56,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:25:57,021 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 [2023-12-16 04:25:58,619 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 [2023-12-16 04:25:58,622 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 [2023-12-16 04:25:58,847 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 [2023-12-16 04:25:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:25:59,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:26:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764987637] [2023-12-16 04:26:02,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636319830] [2023-12-16 04:26:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636319830] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:26:02,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:26:02,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-16 04:26:02,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587020321] [2023-12-16 04:26:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:02,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:26:02,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:26:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:26:02,319 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) [2023-12-16 04:26:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:05,903 INFO L93 Difference]: Finished difference Result 2905 states and 3361 transitions. [2023-12-16 04:26:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:26:05,904 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 [2023-12-16 04:26:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:05,921 INFO L225 Difference]: With dead ends: 2905 [2023-12-16 04:26:05,921 INFO L226 Difference]: Without dead ends: 1586 [2023-12-16 04:26:05,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:26:05,924 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 73 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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 [2023-12-16 04:26:05,924 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] [2023-12-16 04:26:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-16 04:26:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1476. [2023-12-16 04:26:06,126 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) [2023-12-16 04:26:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1707 transitions. [2023-12-16 04:26:06,128 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1707 transitions. Word has length 139 [2023-12-16 04:26:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:06,128 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 1707 transitions. [2023-12-16 04:26:06,128 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) [2023-12-16 04:26:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1707 transitions. [2023-12-16 04:26:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 04:26:06,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:26:06,130 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] [2023-12-16 04:26:06,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:06,337 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 [2023-12-16 04:26:06,338 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:26:06,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:26:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1032180908, now seen corresponding path program 1 times [2023-12-16 04:26:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:26:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442327178] [2023-12-16 04:26:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:26:06,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:26:06,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143065284] [2023-12-16 04:26:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:26:06,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:26:06,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:26:06,382 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) [2023-12-16 04:26:06,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:26:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:26:06,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 04:26:06,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:26:07,254 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 [2023-12-16 04:26:07,915 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 [2023-12-16 04:26:07,917 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 [2023-12-16 04:26:08,103 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 [2023-12-16 04:26:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:26:08,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:26:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 04:26:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:26:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442327178] [2023-12-16 04:26:10,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:26:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143065284] [2023-12-16 04:26:10,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143065284] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:26:10,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:26:10,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-16 04:26:10,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252798830] [2023-12-16 04:26:10,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:26:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:26:10,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:26:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:26:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:26:10,997 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) [2023-12-16 04:26:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:26:14,652 INFO L93 Difference]: Finished difference Result 3159 states and 3642 transitions. [2023-12-16 04:26:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:26:14,653 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 [2023-12-16 04:26:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:26:14,653 INFO L225 Difference]: With dead ends: 3159 [2023-12-16 04:26:14,653 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:26:14,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:26:14,672 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 [2023-12-16 04:26:14,673 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] [2023-12-16 04:26:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:26:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:26:14,675 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) [2023-12-16 04:26:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:26:14,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2023-12-16 04:26:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:26:14,675 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:26:14,676 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) [2023-12-16 04:26:14,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:26:14,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:26:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:26:14,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:26:14,878 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 [2023-12-16 04:26:14,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 04:26:26,805 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 3 xjuncts wrt. a ∧-75-7-8-7-8-6-8-6-8-6-8-6-8-6-8-6-7-6-7-6-7-6-6-6-5-6-4-5-3-5-3-5-3-5-1 context. [2023-12-16 04:26:26,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:26:26,817 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 [2023-12-16 04:26:26,826 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 04:26:26,827 INFO L158 Benchmark]: Toolchain (without parser) took 74418.84ms. Allocated memory was 249.6MB in the beginning and 885.0MB in the end (delta: 635.4MB). Free memory was 200.1MB in the beginning and 751.1MB in the end (delta: -551.1MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. [2023-12-16 04:26:26,827 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 172.0MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:26:26,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.10ms. Allocated memory is still 249.6MB. Free memory was 199.6MB in the beginning and 185.9MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 04:26:26,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.96ms. Allocated memory is still 249.6MB. Free memory was 185.9MB in the beginning and 182.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:26:26,828 INFO L158 Benchmark]: Boogie Preprocessor took 98.02ms. Allocated memory is still 249.6MB. Free memory was 182.8MB in the beginning and 178.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 04:26:26,832 INFO L158 Benchmark]: RCFGBuilder took 792.43ms. Allocated memory is still 249.6MB. Free memory was 178.6MB in the beginning and 211.8MB in the end (delta: -33.2MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. [2023-12-16 04:26:26,832 INFO L158 Benchmark]: TraceAbstraction took 73088.71ms. Allocated memory was 249.6MB in the beginning and 885.0MB in the end (delta: 635.4MB). Free memory was 210.8MB in the beginning and 751.1MB in the end (delta: -540.3MB). Peak memory consumption was 95.1MB. Max. memory is 8.0GB. [2023-12-16 04:26:26,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 172.0MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 338.10ms. Allocated memory is still 249.6MB. Free memory was 199.6MB in the beginning and 185.9MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 95.96ms. Allocated memory is still 249.6MB. Free memory was 185.9MB in the beginning and 182.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 98.02ms. Allocated memory is still 249.6MB. Free memory was 182.8MB in the beginning and 178.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 792.43ms. Allocated memory is still 249.6MB. Free memory was 178.6MB in the beginning and 211.8MB in the end (delta: -33.2MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. * TraceAbstraction took 73088.71ms. Allocated memory was 249.6MB in the beginning and 885.0MB in the end (delta: 635.4MB). Free memory was 210.8MB in the beginning and 751.1MB in the end (delta: -540.3MB). Peak memory consumption was 95.1MB. 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